star trek the best episodes

The Top 57 Episodes of ‘Star Trek,’ Ranked From Great to Perfect

First, let’s be clear: Ranking the best “Star Trek” episodes is a silly thing to do. To date, the longest-running American TV franchise has aired a gargantuan 890 episodes and counting, starting with the original series in 1966. Since then, at least one “Star Trek” TV show has aired (or streamed) every decade, totaling 11 so far (with more on the way ). Choosing the best episodes within such a boundless, occasionally contradictory storytelling galaxy seems about as wise as cheating when playing poker with a Klingon.

On the other hand, there may be no more time-honored tradition among “Star Trek” fans than a vigorous debate over what constitutes the best of the franchise. (Best series ? Best captains ? Best starships ? Best aliens ? Best uniforms ? They’ve all been ranked multiple times !)

In that spirit — and to commemorate the 57th anniversary of “Star Trek” on Sept. 8 —  Variety ’s resident “Trek” geeks have ranked the top 57 episodes of all time, across the franchise.

Creating our list required some deep-dish nerdiness in its own right: We compiled a long list of episodes from each series that we felt deserved to be on the final ranking. Then we created our own individual rankings — and promptly realized our taste was quite divergent. To reconcile our lists, we adopted the approach of the great movie ranking podcast, Screen Drafts : We took alternating turns placing a pick from 57 to 1, and we each had two opportunities to veto the other’s pick (which in every case was to ensure it was placed higher on the list).

Other than the short-lived “Star Trek: The Animated Series” (1973-1974), this list reflects every other iteration of “Trek” on TV: “Star Trek: The Original Series” (1966-1969); “Star Trek: The Next Generation” (1987-1994); “Star Trek: Deep Space Nine” (1993-1999); “Star Trek: Voyager” (1995-2001); “Star Trek: Enterprise” (2001-2005); “Star Trek: Discovery” (2017-2024); “Star Trek: Picard” (2020-2023); “Star Trek: Prodigy” (2021-2022); and the ongoing “Star Trek: Lower Decks” (2020-present) and “Star Trek: Strange New Worlds” (2022-present).

The Way to Eden

“The Original Series” — Season 3, Episode 20

Look, this episode gets a lot of hate. But the fact is “TOS” is known (by today’s standards) for being very campy, and there is no episode campier than this one. A group of space hippies board the Enterprise on their journey to a mythical planet called Eden, where they can live happily forever. The episode memorably features Charles Napier (who would go on to a long career playing tough guys, villains, cops and the like) breaking out into song a bunch of times, including a jam session with Spock (Leonard Nimoy). —Joe Otterson Original airdate: Feb. 21, 1969

Terra Prime

“Enterprise” — Season 4, Episode 21 More than any other episode of “Enterprise,” “Terra Prime” made the most of the show’s mission to dramatize the beginnings of Starfleet, 100 years before the events of “TOS.” Just as a newfound coalition of planets begins to form on Earth (a precursor to the Federation), Captain Archer (Scott Bakula) and his crew must stop a xenophobic terrorist (played to the hilt by future “Star Trek Into Darkness” villain Peter Weller) bent on forcing all aliens to leave Earth. Subtle, it ain’t, but the story feels more relevant today than it did 20 years ago, and everyone in the cast gets a moment to shine. Alas, it came too late: “Enterprise” had been canceled before this episode even went into production. —Adam B. Vary Original airdate: May 13, 2005

“Prodigy” — Season 1, Episode 6

The animated “Prodigy” was the first “Star Trek” series geared toward kids, but that doesn’t mean there weren’t things for older “Trek” fans to enjoy. In particular, “Kobayashi” perfectly embodies what makes this show a worthy entry in “Trek” canon. Dal (Brett Gray) and Jankom Pog (Jason Mantzoukas) discover the holodeck aboard the Protostar, where they decide to go through the Kobayashi Maru, a.k.a. the “no-win scenario” that Capt. Kirk successfully beat during his time at the Academy. He gets help along the way from legendary characters like Spock, Dr. Crusher (Gates McFadden) and Odo (René Auberjonois). —J.O.

Original airdate: Jan. 6, 2022

Stormy Weather

“Discovery” — Season 4, Episode 6

On a mission to discover the origins of a cataclysmic gravitational anomaly, the U.S.S. Discovery enters a subspace rift and finds itself trapped inside a lethal black void that threatens to collapse in on the ship. The result is a classic race-against-time thriller (directed by “Trek” mainstay Jonathan Frakes), but what makes “Stormy Weather” stand out amid the heavily serialized episodes of “Discovery” is its emotionally resonant use of the ship’s sentient A.I. computer, Zora (Annabelle Wallis), who has to learn how to calm her mind from overwhelming stimuli in order to guide the ship out of danger. —A.B.V.

Original airdate: Dec. 23, 2021

Seventeen Seconds

“Picard” — Season 3, Episode 3

“Picard” didn’t find itself until Season 3, which reunited the core cast of “The Next Generation” — and it was really Episode 3 that sealed the deal. Riker (Frakes) is forced to take command of the Titan as Vadic (Amanda Plummer) and the Shrike hunt them. Picard (Patrick Stewart) and Dr. Crusher get an all-time great scene together as she reveals why she never told him about their son, Jack (Ed Speleers). Worf (Michael Dorn) makes his big return. We learn the Changelings are still intent on attacking the Federation. Riker and Picard end up at odds in a way we’ve never seen before. In short, epic. —J.O.

Original airdate: March 2, 2023

The Enemy Within

“The Original Series” — Season 1, Episode 5

The transporter — the cause of, and solution to, so many “Star Trek” problems — accidentally splits Capt. Kirk (William Shatner) into two people: Good Kirk, who is wracked with indecision, and evil Kirk, who is a histrionic asshole. Come for a meditation on the darkness that lies tucked inside everyone’s psyche, stay for some of William Shatner’s most deliciously hammy acting — and this was just the fifth episode of the series! —A.B.V.

Original airdate: Oct. 6, 1966

Family Business

“Deep Space Nine” — Season 3, Episode 23

The Ferengi episodes of “DS9” are always great comic relief, with this episode giving fans their first view of the home planet of Ferenginar and Ferengi culture in general. Quark (Armin Shimerman) and Rom (Max Grodénchik) must return home when their mother, Ishka (Andrea Martin), is accused of acquiring profit (gasp!), something Ferengi females are forbidden to do. Shimerman and Martin shine as they play out Quark and Ishka’s relationship, while Grodénchik really gets to put his comedic chops on display. This episode is also notable as the first appearance of Brunt (Jeffrey Combs) from the Ferengi Commerce Authority, as well as Kasidy Yates (Penny Johnson Jerald), frequent love interest of Cmdr. Sisko (Avery Brooks). —J.O.

Original airdate: May 15, 1995

Blink of an Eye

“Voyager” — Season 6, Episode 12

The Voyager gets stuck in orbit around a planet where time passes far more rapidly than in the rest of space, as the episode alternates between the bemused curiosity of Capt. Janeway (Kate Mulgrew) and her crew and the awestruck preoccupation of the expeditiously progressing populace on the planet below, for whom Voyager is a sparkling, fixed constant in the night sky. At one point, the Doctor (Robert Picard) beams down to the planet to investigate, and a delay of only a few minutes on Voyager means he spends three years on its surface. He even adopts a son! One of the great, wild what if? episodes of “Star Trek.” —A.B.V.

Original airdate: Jan. 19, 2000

“The Next Generation” — Season 3, Episode 23

Mark Lenard absolutely crushed the role of Spock’s father, Sarek, in multiple episodes across multiple “Star Trek” series and movies, but this episode is perhaps his finest performance as the character. Sarek comes to the Enterprise-D on what is meant to be his final mission, only for the crew to learn he is suffering from Bendii Syndrome. The condition leaves him prone to uncharacteristic emotional outbursts while also causing him to telepathically influence the emotions of those around him. Picard saves the day by mind melding with Sarek, allowing him to finish his mission with dignity — and provide Stewart with the chance for some powerhouse acting as he channels Sarek’s volcanic emotions. —J.O.

Original airdate: May 14, 1990

“Enterprise” — Season 3, Episode 10

“Trek” loves a moral dilemma, and this one’s a doozy: After Cmdr. Tucker (Connor Trinneer) is critically injured while the Enterprise is on a deep space mission, Dr. Phlox (John Billingsley) suggests growing a “mimetic symbiote” of Trip — effectively, a clone with a built-in two-week lifespan — in order to create the brain tissue needed to save Trip’s life. But that means the Enterprise crew must endure watching Trip’s clone rapidly age from a precocious kid to an adult man (played by Trinneer with eerie self-possession), who then pleads for his own right to live. Creepy and heartbreaking in equal measure. —A.B.V.

Original airdate: Nov. 19, 2003

Trials and Tribble-ations

“Deep Space Nine” — Season 5, Episode 6

This episode is a love letter to the original series, with the Defiant’s crew transported back in time to the events of “The Trouble With Tribbles.” A Klingon agent is planning to use a booby-trapped tribble to assassinate James T. Kirk. Thanks to digital editing, the crew is able to interact with the original Enterprise crew and keep the timeline intact. —J.O.

Original airdate: Nov. 4, 1996

“Deep Space Nine” — Season 2, Episode 23

Mirror universe episodes of “Star Trek” are (almost) always fun, if ultimately a little silly. But this one — in which Kira (Nana Visitor) and Dr. Bashir (Alexander Siddig) find themselves in an alternate reality in which Bajor, Cardassians and Klingons subjugate humans as slaves — comes closest to matching the spark of discovery in the original “TOS” episode. It’s especially fun to watch Visitor devour the role of Kira’s deliciously wicked mirror counterpart, the Intendant. —A.B.V.

Original airdate: May 16, 1994

Memento Mori

“Strange New Worlds” — Season 1, Episode 4

This episode proved “Strange New Worlds” — the newest “Star Trek” series — could be as action-packed as the very best of “Star Trek.” The Enterprise crew find themselves on the run from the Gorn, a savage enemy (first introduced on “TOS” and largely ignored in “Trek” canon) about which they know virtually nothing. They are forced to use every resource at their disposal to outwit and outrun the Gorn, including tapping into the subconscious of La’an (Christina Chong), the only crew member who has encountered the aliens and survived. —J.O.

Original airdate: May 26, 2022

Counterpoint

“Voyager” — Season 5, Episode 10

The main story is a tense, WWII allegory: Capt. Janeway and her crew hide telepathic refugees while passing through the space of the Devore, who have outlawed telepaths. But the real story is the relationship Janeway forms with the lead Devore inspector, Kashyk (Mark Harelik), who suddenly shows up alone and announces he’s defecting. As Kashyk aids Janeway in finding safe harbor for the refugees, she realizes how much he’s her intellectual equal, and she finds herself drawn to him — in spite of (or perhaps spurred on by) her continued suspicion of his motives. A great, subtle performance by Mulgrew captures both Janeway’s steely wits and her private yearning. —A.B.V.

Original airdate: Dec. 16, 1998

The Drumhead

“The Next Generation” — Season 4, Episode 21

“Star Trek” has done a number of courtroom episodes, and this is one of the best. Rear admiral Norah Satie (Jean Simmons) is sent to investigate suspected sabotage aboard the Enterprise. The investigation quickly spirals into paranoia and accusations of treachery against a crew member who is revealed to have Romulan lineage. It is an excellent reminder of what can happen when persecution is dressed up as an attempt at greater security, with Picard using Satie’s father’s teachings to bring about her downfall. —J.O.

Original airdate: April 29, 1991

“The Next Generation” — Season 7, Episode 8

More thwarted romance! The seasons-long will-they/won’t-they between Picard and Dr. Crusher (Gates McFadden) gets its best showcase, when the pair are captured by isolationist aliens and given implants that allow them to read each other’s thoughts. You get the feeling Stewart and especially McFadden had been dying to play out this dynamic on the show, so they both bring years of sublimated longing to the episode. —A.B.V.

Original airdate: Nov. 8, 1993

In the Hands of the Prophets

“Deep Space Nine” — Season 1, Episode 20

Louise Fletcher’s performance as Vedek Winn (later Kai Winn) ranks among the best “Star Trek” villains of all time. Deeply religious to the point of fanaticism, Winn protests Keiko O’Brien (Rosalind Chao) teaching children on Deep Space Nine that the wormhole aliens are not deities, as many Bajorans believe. Winn’s words whip Bajorans on the station into a frenzy; Keiko’s school is bombed. But what Winn really desires is power, to the point she tries to get one of her followers to kill a fellow Vedek she sees as a threat. The episode sets up Winn’s role as a major antagonist throughout the series to great effect. —J.O.

Original airdate: June 21, 1993

The Trouble With Tribbles

“The Original Series” — Season 2, Episode 15

If you’ve seen any episode of “TOS,” chances are it’s this one. While on shore leave at a space station, the Enterprise comes upon an adorably furry alien creature called a tribble, which are born pregnant, multiply exponentially, consume enormous quantities of food and react with alarm when in the presence of a Klingon. Fizzy and funny and, to this day, one of the best-known episodes of “Trek” ever. —A.B.V.

Original airdate: Dec. 29, 1967

Balance of Terror

“The Original Series” — Season 1, Episode 14

Introducing the Romulans alone makes this episode worthy of being on the list. But it’s also an epic cat-and-mouse game between Kirk and a Romulan commander played by none other than Mark Lenard, who would go on to play Sarek starting in Season 2. Kirk successfully lures the Romulan ship into a trap, leading to Lenard delivering the iconic line, “You and I are of a kind. In a different reality, I could have called you friend.” —J.O.

Original airdate: Dec. 15, 1966

“The Next Generation” — Season 4, Episode 20

John de Lancie never disappoints when he plays Q, but this episode offered a wonderful twist on his usual appearances. Following the events of “Deja Q,” Q returns to the Enterprise saying he owes Picard a debt. Picard repeatedly tells Q he wants nothing from him, but Q notices Picard has eyes for Vash (Jennifer Hetrick), the mercenary archeologist Picard first met on Risa. Being Q, he naturally transports Picard, Vash, and the bridge crew to a Robin Hood fantasy in which Picard must rescue Vash from the evil Sir Guy of Gisbourne (Clive Frevill). Added bonus: Worf, in scarlet tights, exclaiming in protest, “I am not a merry man!” —J.O.

Original airdate: April 22, 1991

“The Original Series” — Season 1, Episode 18

The classic “trial by combat” episode that pitted Kirk against a Gorn captain on a barren, rocky planet (i.e. the storied filming location Vasquez Rocks ). Few images from “Star Trek” have become more iconic than the original Gorn costume, which was essentially an actor dressed as a large lizard. The ending is also an all-timer, with Kirk choosing to spare the Gorn, proving to the all-powerful Metrons that set up the trial by combat that humans are capable of more than just random violence. —J.O.

Original airdate: Jan. 19, 1967

A Mathematically Perfect Redemption

“Lower Decks” — Season 3, Episode 7

“Star Trek’s” first pure comedy (and second animated series) often plays as a twisted love letter to the entire “Trek” franchise — like when Peanut Hamper (Kether Donohue), one of the sentient Exocomp robots first introduced on “The Next Generation,” abandons the crew of the U.S.S. Cerritos in a time of need. This episode tracks Peanut Hamper’s journey to redemption afterwards, which involves her encountering a seemingly primitive species called the Areore. To say anything more would spoil the fun; suffice it to say, “Trek” has rarely provoked gasps of deep laughter like this episode does. —A.B.V.

Original airdate: Oct. 6, 2022

Bar Association

“Deep Space Nine” — Season 4, Episode 15

What better episode of “Star Trek” to talk about after Hollywood’s hot labor summer? Fed up with the unfair conditions at Quark’s bar, Rom talks the other workers into forming a union and going on strike. Max Grodénchik truly shines in this episode as the would-be union leader. Once Rom successfully gets Quark to agree to all the workers’ demands, he outright quits and goes to work as a repair technician for the station, setting up some of Rom’s best moments in the episodes to come. —J.O.

Original airdate: Feb. 19, 1996

“Voyager” — Season 5, Episode 26 & Season 6, Episode 1

The Voyager swoops to the rescue of the Equinox, another Federation starship stranded in the Gamma Quadrant — only this one, led by Capt. Ransom (John Savage), is a smaller ship not meant for deep space travel. With their crew whittled down to just 12 people, Ransom has resorted to murdering alien creatures to use their bio-matter to boost the Equinox’s engines — a horrific violation of everything Starfleet stands for. The discovery pushes Janeway to her own limits, as she obsessively pursues the Equinox despite the cost to her own crew and her morality. The two-parter is one of the darkest episodes of “Star Trek,” a chilling reminder of how easily good people can find themselves slipping into disgrace. —A.B.V.

Original airdates: May 26, 1999 & Sept. 22, 1999

Who Mourns for Morn?

“Deep Space Nine” — Season 6, Episode 12

Morn (Mark Allen Shepherd) was a “Deep Space Nine” fixture, always at Quark’s bar, but never actually speaking onscreen. But in this episode, with Morn apparently dead in an accident, everyone reveals the offscreen times they spent with him, including the revelation that he “never shuts up.” Quark inherits all of Morn’s property, which Odo relishes revealing is ultimately nothing. But as it turns out, Morn had a much more adventurous life before his time on “DS9” than anyone knew, leading his former comrades to seek him out to get a hold of the money they believed he still possessed. —J.O.

Original airdate: Feb. 4, 1998

Species Ten-C

“Discovery” — Season 4, Episode 12

Other than the Gorn, almost all of the aliens on “Star Trek” are, essentially, humans with slightly different forehead ridges. But in its most recent season, “Discovery” embraced “Trek’s” prime directive (seeking out new life, bolding going where no one’s gone, etc.) by crafting a species that is truly alien: the Ten-C. Throughout the season, the Ten-C are presented as both a total mystery and an existential threat; when Capt. Burnham (Sonequa Martin-Green) and the crew of the Discovery finally reach them — outside the barrier of the Milky Way galaxy — they are unlike anything the show has ever encountered. Rarely has “Trek” applied more intellectual and emotional rigor to what it might actually be like to attempt first contact with extra-terrestrials, and rarely has it been this compelling. —A.B.V.

Original airdate: March 10, 2022

A Man Alone

“Deep Space Nine” — Season 1, Episode 4

Odo is one of the best characters in “DS9” — and in the “Star Trek” universe — in general, and this is the first episode to really establish him as a standout . A known criminal returns to the station only to die shortly after, and Odo is accused of his murder. Odo’s status as an outsider, but ultimately someone to be respected, is made crystal clear in this episode, with even his archenemy Quark acknowledging that Odo is not the type to murder someone in cold blood. —J.O.

Original airdate: Jan. 17, 1993

Mirror, Mirror

“The Original Series” — Season 2, Episode 4

The transporter strikes again, this time accidentally zapping Kirk, Uhura (Nichelle Nichols), Scotty (James Doohan) and Bones (DeForest Kelley) from their reality into a parallel universe in which the benevolent Federation has been replaced by the bloodthirsty Terran Empire, governed by brute force and fascistic exploitation — and Spock has a goatee! More silly than serious (and no less fun for it), the episode effectively spawned an entire sub-genre of parallel universe episodes of TV (from “Supernatural” to “Friends”) and gave generations of actors a chance to play wildly against type. —A.B.V.

Original airdate: Oct. 6, 1967

“The Next Generation” — Season 4, Episode 2

People rave about “The Best of Both Worlds” and Picard’s assimilation by the Borg, but fewer remember this incredible follow-up episode. Picard returns to his family vineyard to put the Borg incident behind him, even briefly thinking that he will leave Starfleet. Jeremy Kemp crushes it as Picard’s brother Robert, with the two sharing a memorable (and muddy) scene in which Picard breaks down and admits how much his assimilation has shaken him. The episode is also memorable for the appearance of Worf’s adoptive parents, who come to the Enterprise to be with him following his discommendation. —J.O.

Original airdate: Oct. 1, 1990

Living Witness

“Voyager” — Season 4, Episode 23

For several minutes, “Living Witness” seems like a mirror universe episode, as a ruthless Janeway, captain of the “warship” Voyager, agrees to aid the Vaskans against the insurgent Kyrians by unleashing a biological weapon upon millions and executing the Kyrian leader. But then we realize that we’ve just witnessed a recreation at a Kyrian museum 700 years in the future, at which point a copy of the Doctor enters the story and learns, to his horror, how much the Kyrians have gotten wrong. What could have been a Rashomon-style caper instead becomes fascinating meditation on how the telling of history can be weaponized, even inadvertently, to maintain old wounds rather than heal them. —A.B.V.

Original airdate: April 29, 1998

Unification

“The Next Generation” — Season 5, Episode 7 & 8

Spock appeared on “The Next Generation” a month before the release of 1991’s “Star Trek VI: The Undiscovered Country” — but this time, at least, crass cross-promotion prompted some sublimely entertaining TV, as Picard and Data (Brent Spiner) aid Spock in his effort to reunify the Romulan and Vulcan peoples. [Stefon voice]: This two-parter has everything : Klingon warbirds, rude Ferengis, Tasha’s evil Romulan daughter Sela (Denise Crosby), Data and Spock philosophizing on their twin pursuits of logic and emotion, the death of Sarek, Worf singing Klingon opera with a four-armed bar pianist, and Picard and Spock mind-melding! —A.B.V.

Original airdates: Nov. 4 & 11, 1991

“Deep Space Nine” — Season 7, Episode 9

Gul Dukat is the best villain in “Star Trek.” Yes, you read that right. The writers and actor Marc Alaimo created an incredibly nuanced character that goes through a remarkable arc over the course of the series. This episode, near the end of “DS9’s” run, reminds fans that Dukat sees himself as a savior, but is ultimately a force for evil. He establishes a cult dedicated to the Pah wraiths on Empok Nor, luring a number of Bajorans to his side. But of course, he also sleeps with his female followers and tries to trick them into a mass suicide. Amazing stuff. —J.O.

Original airdate: Nov. 23, 1998

The Last Generation

“Picard” — Season 3, Episode 10

The cast of “TNG” infamously never got their swan song, after 2002’s “Star Trek: Nemesis” bombed in theaters, so this series finale serves as a gift both to them and to “TNG” fans. Every character gets their spotlight, including the resurrected Enterprise-D, as Picard, Riker, Dr. Crusher, Data, Worf, LaForge (LeVar Burton) and Troi (Marina Sirtis) all help to take down the Borg once and for all. The final scene — everyone sitting around a poker table, laughing and reminiscing — is as pure and satisfying an expression of fan service as anything “Trek” has ever done. —A.B.V.

Original airdate: April 20, 2023

“The Next Generation” — Season 3, Episode 13

Until this episode, Q was an enjoyably malevolent force within “TNG,” an omnipotent being who’d gleefully pop up now and again to play with the lives of the Enterprise-D crew. But here, when Q suddenly appears on the bridge, he’s been stripped of all his powers (and all of his clothes) and begs Picard for safe harbor. At first, no one believes him — even after Guinan (Whoopi Goldberg) stabs him with a fork — which only fuels John de Lancie’s sparkling performance, as Q confronts life as ( shudder ) a mortal human. —A.B.V.

Original airdate: Feb. 3, 1990

An Embarrassment of Dooplers

“Lower Decks” — Season 2, Episode 5

The title refers to an alien called a Doopler, who duplicate themselves whenever they get embarrassed — which, naturally, becomes an issue the moment one steps foot on the Cerritos. But really, this episode is one of those deeply enjoyable “Trek” episodes that is less about story than it is about the vibes , as the characters spend their downtime winningly contending with the central premise of the show: The bittersweet contentment of life at the bottom of the ladder. —A.B.V.

Original airdate: Sept. 9, 2021

“Deep Space Nine” — Season 2, Episode 19    

The lives of the past hosts of the Dax symbiont are a recurring plot device on “DS9,” and no episode does it better than this one. A group of Klingons who knew Curzon Dax arrive at the station and enlist Jadzia’s (Terry Ferrell) help in killing their sworn enemy, a criminal known as The Albino who killed the three Klingons’ first-born sons. Jadzia ultimately honors the blood oath, as the episode explores the meaning of honor and solidarity. —J.O.

Original airdate: March 28, 1994

Where No Man Has Gone Before

“The Original Series” — Season 1, Episode 3

The famed second pilot episode of “Star Trek” (which introduced William Shatner as Capt. Kirk) is a strange artifact today: Bones and Uhura aren’t aboard yet, Sulu (George Takei) isn’t at the helm, the Enterprise has a psychiatrist (played by Sally Kellerman), and the uniforms and sets look a bit off. But the central story — Kirk’s best friend, Gary Mitchell (Gary Lockwood), is zapped by an energy blast at the edge of the galaxy, and begins to exhibit extraordinary psychokinetic powers — is vintage “Trek”: Brainy, brawny, and just the right side of uncanny. And it’s fascinating now to see how well-established Kirk and Spock’s dynamic of emotion vs. logic was from the very start. —A.B.V.

Original airdate: Sept. 22, 1966

The Measure of a Man

“The Next Generation” — Season 2, Episode 9

Data’s quest for humanity is at the very core of “TNG,” and this stirring episode literally puts that quest on trial — and establishes the show’s voice for the rest of its run. A Starfleet scientist wants to dismantle Data in order to create more androids, but Data refuses, setting up an intense courtroom drama — is Data merely a machine and the property of Starfleet? — with Picard representing Data while Riker is forced to represent the scientist. —J.O.

Original airdate: Feb. 13, 1989

“The Next Generation” — Season 4, Episode 26 & Season 5, Episode 1

The Klingons started on “Trek” as a not-that-thinly-veiled metaphor for the Soviet Union at the height of the Cold War, but over the decades, they’ve developed their own richly detailed mythology. This two-parter (which aired just before the fall of the USSR) depicts a civil war within the Klingon Empire that leads to Worf’s decision to leave the Enterprise and join the fight. For a series that was episodic by design, this is the closest “TNG” ever got to serialized storytelling, incorporating events from several previous episodes — including the shocking introduction of Tasha’s Romulan daughter, Sela. —A.B.V.

Original airdates: June 17, 1991 & Sept. 23, 1991

“Deep Space Nine” — Season 1, Episode 11

It is endlessly entertaining to see Quark get what he wants as he then  learns that it’s way more trouble than he realized. This episode sums that idea up nicely, while also featuring the first of many wonderful appearances by Wallace Shawn as Ferengi leader Grand Nagus Zek. Zek unexpectedly names Quark his successor, only for Zek to die shortly after. Quark is thrilled at first, before he realizes being the Nagus puts a massive target on his back. This episode also helps build the friendship between Nog (Aron Eisenbeg) and Jake (Cirroc Lofton), with Jake secretly teaching Nog how to read. —J.O.

Original airdate: March 22, 1993

Tinker, Tenor, Doctor, Spy

“Voyager” — Season 6, Episode 4

Yearning to grow past his programming, the Doctor allows himself the ability to daydream, in one of the flat-out funniest episodes of “Trek” ever. It opens with Robert Picardo singing opera as Tuvok (Tim Russ) undergoes pon farr (i.e. the madness to mate that consumes Vulcan males) and just gets wilder from there, up to the moment when the Doctor, who’d fantasized about taking over command of Voyager in an emergency, does it for real. —A.B.V.

Original airdate: Oct. 13, 1999

“The Original Series” — Season 2, Episode 1

Speaking of pon farr, this is the “TOS” episode that first establishes it — as well as the planet Vulcan, several Vulcan customs and traditions, and the now legendary Vulcan salute (honorable mention: Spock actually smiles!). Wracked with pon farr, Spock asks for leave back on his home planet, and eventually reveals that he must meet his betrothed, T’Pring (Arlene Martel). Naturally, Kirk and Spock end up in a fight to the death in one of the most iconic battles in “Star Trek” history. —J.O.

Original airdate: Sept. 15, 1967

Year of Hell

“Voyager” — Season 4, Episode 8 & 9

The most lasting criticism of “Voyager” is that every week, no matter what happened in the previous episode, the ship and crew emerged unscathed and ready for a new adventure. As if in response, this two-parter tracks a year in which the Voyager is ravaged to the point of near ruin by repeated encounters with an aggressive alien species called the Krenim. Unbeknownst to the crew, they’re actually the victims of a Krenim scientist, Annorax (Kurtwood Smith), who developed a technology to alter the fabric of time by erasing entire species from ever existing. This is as harrowing and merciless as “Trek’s” ever been, but it’s not quite the best episode of “Voyager” due to the irony of its ending: Janeway crashes the husk of the Voyager into Annorax’s timeship — which resets the timeline completely, as if nothing that we’d seen had ever happened. —A.B.V.

Original airdates: Nov. 5 & 12, 1997

“Deep Space Nine” — Season 3, Episodes 11 & 12

“Star Trek” often addresses timely societal issues, but this episode put them firmly in a 21st century context. Sisko, Bashir, and Dax accidentally wind up in San Francisco circa 2024, where poverty and oppression of the disadvantaged are running rampant (crazy how that remains timely, huh?). When a man meant to serve an important purpose in an historic riot is accidentally killed too soon, Sisko is forced to take his place. —J.O.

Original airdate: Jan. 2, 1995 & Jan. 9, 1995

Those Old Scientists

“Strange New Worlds” — Season 2, Episode 7

In one of the rare “Trek” crossover episodes, Ens. Boimler (Jack Quaid) and Ens. Mariner (Tawny Newsome) from “Lower Decks” find themselves zapped back to the era when Capt. Pike (Anson Mount) captained the Enterprise. Marshalled by Jonathan Frakes’ steady hand as a director , the disparate tones of “Lower Decks” and “Strange New World” somehow mesh perfectly, and hilariously, together. Packed with guffaw-worthy laughs, “Those Old Scientists” also becomes a deeply poignant expression of the impact “Trek” has had on generations of fans. Maybe it’s controversial to place one of the most recent “Trek” episodes so high on this list, but this one more than earns its spot. —A.B.V.

Original airdate: July 22, 2023

The Best of Both Worlds

“The Next Generation” — Season 3, Episode 26 & Season 4, Episode 1

This two-parter is frequently cited as the best “Next Generation” storyline of all time, mostly because it features one of the most iconic cliffhangers in all of television. The Borg attack the Federation, leading to a showdown with the Enterprise. Picard is captured and assimilated, revealing himself to his crew as Locutus of Borg. If we’re splitting Borg nano-probes, the second half doesn’t quite live up to the first, which is why, for us, it doesn’t quite rank into the Top 10. Special shoutout to this episode for setting up the incredible “Star Trek” film “First Contact.” —J.O.

Original airdate: June 18, 1990 & Sept. 24, 1990

“Deep Space Nine” — Season 1, Episode 19

When a Cardassian named Marritza (Harris Yulin) arrives on Deep Space Nine, Kira realizes he must have worked at one of the most notorious labor camps during Cardassia’s occupation of Bajor, and she arrests him as a war criminal. What follows is effectively a two-hander, as Kira’s interrogation of Marritza leads to a series of revelations that unmoor her hard-won fury at the atrocities inflicted upon her people. The conventional wisdom is that “DS9” didn’t get cooking until the Dominion War, but this early episode proves that this show was providing great, searing drama from the start. —A.B.V.

Original airdate: June 14, 1993

“The Original Series” — Season 1, Episode 22

Ricardo Montalbán makes his debut as Khan Noonien Singh, a genetically superior dictator from Earth’s Eugenics Wars. Khan and his people have been in suspended animation for 200 years and are looking to dominate humanity once again. Naturally, Kirk is able to beat Khan in a riveting confrontation, but rather than send him and his people to a penal colony, he agrees to let them settle on the wild planet, Ceti Alpha V. The episode proved to be so good, it led to the 1982 film “Star Trek II: Wrath of Khan,” arguably the best “Trek” movie of all time. —J.O.

Original airdate: Feb. 16, 1967

“Voyager” — Season 5, Episode 6

There’s something about time travel — and the twisty narrative paradoxes it can cause — that has engendered some of the best episodes of “Trek” ever made. That certainly includes this stunning “Voyager” episode, which opens with Harry Kim (Garrett Wang) and Chakotay (Robert Beltran), 15 years in the future, discovering the frozen husk of the Voyager buried inside a glacier on a barren ice planet. It turns out Kim made a critical mistake that caused the catastrophic accident, from which only he and Chakotay survived. Their unyielding fixation to right that wrong — and erase the previous 15 years from history — makes for a gripping nail-biter about regret and devotion. Not only did LeVar Burton direct, but he cameos as Capt. Geordi La Forge! —A.B.V.

Original airdate: Nov. 18, 1998

The Defector

“The Next Generation” — Season 3, Episode 10

Did a Romulan admiral really defect to the Federation, or are the Romulans perpetrating an elaborate hoax on Picard and the Enterprise crew? This wonderful episode sees the admiral in question (played by James Sloyan) claiming the Romulans are building a secret base within the Neutral Zone, forcing Picard to consider whether or not he should investigate and thus risk starting a war. It also features the excellent opening in which Picard tries to teach Data about humanity by having him act out scenes from Shakespeare’s “Henry V.” —J.O.

Original airdate: Jan. 1, 1990

Chain of Command

“The Next Generation” — Season 6, Episode 10 & 11

Lured into Cardassian territory under false pretenses, Picard is captured and systematically tortured by a ruthless interrogator, Gul Madred, in a chilling performance by David Warner. Their disturbing tête-à-tête — Picard is stripped naked and nearly broken by the end — would be enough for one of the all-time best “Trek” episodes. But this two-parter also boasts Ronny Cox as Capt. Jellico, Picard’s replacement on the Enterprise, whose prickly and demanding leadership style creates all kinds of thrilling friction among the crew. —A.B.V.

Original airdates: Dec. 14 & 21, 1992

In the Pale Moonlight

“Deep Space Nine” — Season 6, Episode 19

In this fantastic episode, Sisko grapples with the ethics of doing whatever it takes to get the Romulans to join the Dominion War on the Federation-Klingon side. This includes falsifying evidence and freeing a known criminal from Klingon prison with the help of master spy Garak (played by the always wonderful Andrew Robinson). Sisko (while recording a personal log) delivers a series of powerful monologues direct to camera about why he did what he did, ultimately deciding it was worth it in the end. —J.O.

Original airdate: April 13, 1998

The City on the Edge of Forever

“The Original Series” — Season 1, Episode 28

Accidentally hopped up on stimulants, a crazed Bones leaps through a time portal on an alien planet and winds up changing history so drastically that the Enterprise disappears. Kirk and Spock travel back to stop him, and land in New York City during the Great Depression, where they learn that Bones saved the life of Sister Edith Keeler (Joan Collins), a pacifist whose message resonates so strongly that the U.S. stays out of WWII, allowing the Nazis to conquer Europe. Alas, Kirk falls deeply in love with Keeler, establishing a classic “Trek” moral dilemma: How does one suppress their most profound personal feelings for the greater good? An all-timer that still resonates today. —A.B.V.

Original airdate: April 6, 1967

Far Beyond the Stars

“Deep Space Nine” — Season 6, Episode 13

In this Avery Brooks-directed episode, Sisko envisions himself as a Black science fiction writer in 1950s New York named Benny Russell. Russell dreams up a story about the crew of a space station led by a Black captain, but his publisher refuses to run it. This episode is memorable for many reasons, the biggest of which being its handling of racism, but it also allows the show’s main cast gets to appear without any prosthetics or makeup, as completely different characters, to great effect. —J.O.

Original airdate: Feb. 9, 1998

Yesterday’s Enterprise

“The Next Generation” — Season 3, Episode 15

The Enterprise-C, believed to have been destroyed over 20 years earlier, emerges from a temporal anomaly and resets history into a decades-long war between the Federation and the Klingon Empire. Tasha — killed off in Season 1 (after Denise Crosby wanted to leave the show) — is brought back to life, and falls for the Enterprise-C’s helmsman (Christopher McDonald), while Guinan implores Picard that something is desperately wrong with history and he must send the Enterprise-C back to certain doom. Somehow, this episode crams a movie’s worth of story into a nimble and rousing 44 minutes. Not a second is wasted. Outrageously great. —A.B.V.

Original airdate: Feb. 19, 1990

The Inner Light

“The Next Generation” — Season 5, Episode 25

When the Enterprise comes upon a mysterious probe, Picard is suddenly hit with a signal that plunges him into a different man’s life on a dying planet. There, Picard experiences half a lifetime, with a wife, children and grandchildren, all in the space of 25 minutes. When Picard realizes this was all meant as a time capsule — a way to preserve the stories of the people of the planet, which was destroyed 1,000 years earlier by an exploding star — the revelation that he lived the life he’d long forsaken as a Starfleet captain, only to have it ripped away, is almost more than he can bear. But hoo boy, does it make for stunning, deeply moving television. In fact, almost no episode of “Trek” is better. Almost. —A.B.V.

Original airdate: June 1, 1992

The Visitor

“Deep Space Nine” — Season 4, Episode 2

Don’t watch this one without tissues handy. This emotionally devastating episode gets right to the heart of what made “DS9” so special — the relationship between Sisko and his son, Jake. Told in flashbacks by an elderly Jake (Tony Todd), the episode recounts how Sisko became unstuck in time, briefly revisiting Jake over the course of his life, and how Jake is determined to bring him back. In brief, fleeting moments, Sisko tells Jake not to worry about him and to live his life to the fullest. But Jake cannot bear the thought of losing his father forever, ultimately sacrificing his own life to restore the normal flow of time. —J.O.

Original airdate: Oct. 9, 1995

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The 20 Best Episodes of ‘Star Trek: The Original Series’

If you’re looking to get into the ‘Trek’ that started it all, start here.

In the more than 50 years since Star Trek made its debut on NBC, the franchise has seen more than a dozen feature films and successfully launched its sixth spinoff series last year with CBS All Access’ Star Trek: Discovery . For all the many amazing stories told in the decades to come, it’s hard to beat the original Star Trek . Running for just three seasons, the series has become synonymous with the science fiction genre and emerged a cultural touchstone that has entertained, educated and inspired dreamers all over the world.

Like any series, Star Trek has its ups and downs. The best episodes, though, rank among television’s very finest. We’ve assembled a list of Star Trek ’s 20 best original series episodes, each of which has withstood the test of time in delivering stories that, despite their spectacle and imagination, are ultimately about exploring the human condition. As such, many of the themes explored on Gene Roddenberry ’s show have only become more relevant and the show’s 23 rd century setting all the more important a future to which we might aspire.

20) The Menagerie - Parts One and Two

The only two-part episode of the original Star Trek , “The Menagerie” is, in a weird way, a kind of clip show. Before William Shatner was cast as Captain James T. Kirk, Star Trek had shot a pilot, “The Cage,” starring Jeffrey Hunter as Captain Christopher Pike. In fact, the only character to carry over from the unaired pilot was Leonard Nimoy’s Spock. Naturally, he’s front and center of “The Menagerie,” a Starfleet courtroom drama in which Enterprise logs are used as evidence, allowing the entirety of “The Cage” to be incorporated into a larger story set some years later.

Hunter did not reprise the Pike role, the episode finding the character having just suffered an accident that has left him a scarred shell of his former self. With a mysterious motivation that is revealed through the course of his trial, Spock abducts Pike and commandeers the Enterprise. With a course locked to a forbidden planet, Spock calmly turns himself over for his court martial, giving the narrative a fantastic ticking clock.

“The Menagerie” arrived midway through Star Trek’s first season and its expansion of Star Trek lore is, in part, why the franchise continues to this day. Bringing “The Cage” (released some years later on its own) into Star Trek continuity paved the way for future Captains of the Enterprise and reminded us that Star Trek’s timeline doesn’t necessarily need to proceed linearly.

Anyone familiar with Star Trek from the J.J. Abrams films also got to meet Captain Pike. Bruce Greenwood played the part in both 2009’s Star Trek and 2013’s Star Trek Into Darkness .

19) The Corbomite Maneuver

Although it aired out of sequence, “The Corbomite Maneuever” followed Star Trek ’s first two pilots with a story that sees the Enterprise coming into contact with a mysterious and powerful alien sphere in an unexplored area of space. Diplomacy soon fails and a strange looking creature, Balok, tells Kirk that his ship will be destroyed. That’s when Kirk comes up with an epic bluff, aiming to convince the alien that the Enterprise contains a made up element, corbomite, that promises mutually assured destruction.

The notion of bluffing is huge in Star Trek and “The Corbomite Manuever” is the most classic example. A bluff, after all, means applying fiction to create a better reality. In a nutshell, that’s exactly what Star Trek is all about. Over the course of the series, the crew of the Enterprise will use their unique perspective to defy the laws of alien civilizations, Starfleet’s own bureaucracy and even of physics themselves. It’s usually about knowing the right time to do the wrong thing and, of that, Captain Kirk is a proven master. He knows exactly when to bend the rules to achieve the greater good.

“The Corbomite Maneuver” also introduces a common theme that alien races aren’t necessarily as alien as they might appear with a final act that features a young Clint Howard .

18) A Piece of the Action

It may sound a bit silly, but the Enterprise’s visit to a planet ruled by 1920’s Chicago gangsters is a whole lot of fun. It even makes a bit more sense than it sounds: a hundred years before this episode takes place, another ship, the Horizon, wound up bringing a book about Chicago mobsters to the planet’s highly suggestible inhabitants, the Iotians. Treating it like a bible, the entire culture adapted to suit the book.

There’s a lot of costume play throughout Star Trek history and seeing Kirk and Spock in gangster outfits is a whole lot more fun than say, the time they have to dress up the Nazis in the second season episode “Patterns of Force”. “A Piece of the Action” would serve as a prototype for Star Trek: The Next Generation ’s holodeck episodes and open the idea that any planet anywhere in the universe could theoretically have a culture identical to any period on Earth.

An abandoned plotline for a 30 th anniversary episode of Star Trek: Deep Space Nine (later told in alternate form in a Star Trek comic) would have seen a return to the Iotian planet and the reveal that, following the events of “A Piece of the Action,” the planet wound up being so heavily influenced by the Enterprise’s visit that it had evolved to become, essentially, a planet of classic Star Trek fans.

17) The Squire of Gothos

Several episodes of the original Star Trek find the crew coming face to face with seemingly omnipotent foes, but few are as quite as memorable as William Campbell ’s performance as the ebullient mischief maker Trelane, self-professed “Squire of Gothos”. When the Enterprise discovers a planet in an area of space that should be abandoned, the crew is drawn to the world’s sole inhabitant, a godlike individual fascinated with 18 th century Earth history who views the crew as nothing more than his playthings.

From Loki of Greek mythology to DC Comics’ Mr. Mxyzptlk, the trickster god is a classic foe. Part of what makes it work so well in the world of Star Trek is because the crew of the Enterprise, to us, appears so advanced technologically. As was the case with foes like Thor or Superman, having an even more powerful foes forces the heroes to rely on their wits alone, ultimately proving that omnipotence is nothing without intelligence and compassion.

Trelane also helped pave the way for John DeLancie ’s Q on Star Trek: The Next Generation . Appearing in more than a dozen episodes of subsequent Star Trek series, Q shares Trelane’s paradoxical blend affability and obnoxiousness. While it’s never specified in the canon, stories told in Star Trek books and comics have connected the characters.

16) Day of the Dove

The Enterprise responds to a distress call only to find a deserted planet and Klingon forces nearby. When both ships somehow become disabled, tensions begin to mount to an unusual degree. Walter Koenig ’s Chekov is threatening to avenge the death of his brother at the Klingons’ hands. But then it’s revealed that he doesn’t even have a brother. Things get weirder and weirder as the planet itself seems to encourage conflict, supplying weapons and easy reasons to give into hatred.

It’s never revealed exactly what the force is that both crews encounter on planet Beta XII-A, but it seems to be a destructive energy that is, perhaps, a manifestation of destructive energy itself, depicted as a crackling red force. When Kirk realizes that he and Michael Ansara ’s Klingon commander Kang are being manipulated, “Day of the Dove” gives us one of William Shatner ’s great mini-monologues.

“All right. All right,” Kirk shouts at Kang. “In the heart. In the head. I won't stay dead. Next time I'll do the same to you. I'll kill you. And it goes on, the good old game of war, pawn against pawn! Stopping the bad guys. While somewhere, something sits back and laughs and starts it all over again.”

That’s a message that, sadly, is every bit as timely today as it was half a century ago.

15) The Galileo Seven

Things go bad during a routine science mission, forcing a shuttlecraft, the Galileo, to make an emergency landing on a dangerous planet, home to enormous apelike beasts. What’s more, a coming ion storm and trouble in another part of the galaxy mean that the Enterprise may need to give up the search.

While there’s some great Kirk moments as he squeezes every possible opportunity from the chain of command to keep looking for the Galileo, this episode is Spock’s show. We get to see him take command over a six-person crew and deal with having to give orders that put officers in mortal danger. Fear amongst the crew makes things all the more dangerous as Spock has to face officers who question his Vulcan logic and, ultimately, his own uncertainty in command to save the crew.

The plot for “The Galileo Seven” originated with Oliver Crawford , who co-wrote the episode’s script with S. Bar-David . He has said that “The Galileo Seven” was directly inspired by the 1939 big screen thriller Five Came Back , about a small airplane that crashed in a South American jungle.

14) A Private Little War

Star Trek was offering a direct allegorical take on the Vietnam War in 1968 with a story that finds Captain Kirk in a moral dilemma. A planet of immense natural resources, Neural, is home to a primitive race. Although Starfleet’s Prime Directive would normally preclude any interference, the Enterprise learns that conflict has broken out among the natives with one side being given advanced weaponry by the Klingon Empire.

While the Enterprise quite often finds itself in the position of having to balance moral imperatives, “A Private Little War” is the best example of the show taking on a contemporary political issue, even if the conclusion doesn’t offer any easy answers.

“A Private Little War” also introduces a memorable Star Trek alien that only appears in this one episode. The Mugato is a ferocious white ape with a spiked back and a poisonous bite. Ben Stiller , a big Star Trek fan, borrowed the name for Will Ferrell ’s character in his 2001 comedy Zoolander .

13) Journey to Babel

The Enterprise is journeying to the planet Babel for a diplomatic conference when one of the visiting ambassadors is murdered. The lineup of suspects includes a wide range of alien dignitaries and one chief suspect: Mark Lenard ’s Vulcan ambassador Sarek. Adding to the drama, Sarek just happens to be Spock’s estranged father.

Not only is “Journey to Babel” an interesting mystery with a grand assembly of interesting alien species, it reveals so much about Spock and his history with his father. It’s a relationship that continues to develop for decades after “Journey to Babel”. Lenard returns as Sarek throughout the franchise’s big screen run and beyond. He’s even set to be a featured character in Star Trek: Discovery with James Frain filling in for the late Lenard.

Before he played Sarek, Mark Lenard famously took on the role of another prominent Star Trek character. Look for details on that performance a bit further down this list.

12) Let That Be Your Last Battlefield

The Enterprise intercepts a stolen shuttlecraft containing Lou Antonio’s Lokai, a fugitive from a planet called Charon. Although he looks like a human being, Lokai is split down the middle, one side black and the other white. It’s not long before Frank Gorshin shows up as Bele, a fellow being from Charon who utterly despises Lokai. Although they may initially appear identical, it is revealed that Bele and Lokai are alternately colored. Bele is black on the left side and white on the right while Lokai is the reverse. Hence, in their culture, their hatred for one another.

With “Let That Be Your Last Battlefield,” Star Trek finds a way to tell a story that isn’t just about racism, but that makes racism itself the focal point for its sci-fi lens, imagining a brand new way to hate and making a powerful reminder that any reason for doing so based on any other physical attribute is just as unnatural.

11) The Doomsday Machine

The crew of the Enterprise faces one of its most awesome cosmic challenges when it comes up against a massive, world-eating device of extreme alien origin. In fact, the device is so alien that we never really learn what it is, although Kirk theorizes it to be an ancient doomsday device. The Enterprise isn’t the first Starfleet ship on the scene this time, either. By the time the Enterprise discovers the danger to the galaxy, the USS Constellation has already risked everything in an attempt to stop the planet killer. The Constellation is recovered by the Enterprise with only one crewmember still left alive, William Windom ’s Commodore Matt Decker.

Not only does “The Doomsday Machine” feature such a memorable monster, it features some great drama between Kirk and Decker. Having just lost his crew to the cosmic goliath, the Commodore is suffering from severe posttraumatic stress and not necessarily thinking with a clear head. Because he technically outranks Kirk, that poses a serious problem in dealing with the matter at hand.

“The Doomsday Machine” also sets up a nice bit of continuity with Star Trek: The Motion Picture . One of the main characters in the 1979 Robert Wise film is Stephen Collins ’ Captain Willard Decker, the son of Commodore Matt Decker.

10) The Devil in the Dark

Something is killing workers on distant a mining colony visited by the Enterprise. Deep in the caves of Janus VI, a rocklike creature is melting people alive with its molten abilities. Despite the attacks, though, there’s no trace of the creature and no understanding for how a carbon based life form could exist in such an environment.

“The Devil in the Dark” functions as both a sci-fi slasher and a moral tale. The end of the episode reveals that life sometimes manifests itself in forms that we may not have ever considered, brought to life visually when Spock performs a Vulcan mind-meld with the alien creature, a horta, and learns that its motivations are not malicious and that, instead, it is the miners who have unwittingly done a great wrong to it.

Although the horta marks another iconic Star Trek alien, “The Devil in the Dark” is their sole appearance of the species the franchise outside of very minor nods in later spinoffs.

9) By Any Other Name

The Enterprise encounters a pair of scouts from the Kelvan Empire, mighty beings from the Andromeda Galaxy who want to use the Starfleet vessel on a generational voyage to their homeworld. Armed with powerful belts that can, among other things, transform people into easily destroyed little polyhedrons of their basic genetic makeup, they easily take the ship. Only a few officers are left in their human form and it’s humanity that, as it often does, gives the Enterprise crew their edge. Because the Kelvans have taken human form for their journey, they’re not used to some of the finer points of being human.

“By Any Other Name” has James Doohan ’s Scotty teaching the male Kelvan about alcohol while Kirk teaches the female one about love. There’s a major degree to which Star Trek celebrates the clash of human and alien cultures and here we get to see the whole crew doing so to the best of their specific abilities.

The work of William Shakespeare is something referenced quite a bit throughout the Star Trek franchise. This episode references a line in Romeo and Juliet wherein Juliet argues that a rose is a rose because of the form it takes and not what it’s called.  Star Trek expands that idea with the suggestion that anything in the form of mankind will, in doing so, become mankind.

8) A Taste of Armageddon

“A Taste of Armageddon” offers a brilliantly high concept sci-fi plot: the Enterprise visits a world that has evolved beyond destructive combat, but not beyond war itself. Instead of destroying one another with weapons that would threaten to also destroy their culture, the conflicting sides of Eminiar VII’s population have agreed to wage war through a highly accurate simulation. If a resident is in an area that the simulation has deemed destroyed, he or she is expected to immediately turn themselves in for disintegration. Unfortunately, a few Enterprise crewmembers are unwittingly present when a building is marked destroyed and their refusal to surrender their lives could mean that a more destructive form of war returns to the planet.

Most of the time, the crew of the Enterprise comes across planets whose values aren’t quite up to date with those held by the enlightened Starfleet. Here, though, the crew is forced to deal with a planet that actually makes a pretty good point and achieved what seems to be far less destructive form of combat. Kirk makes an interesting argument, however, suggesting that the people of Eminiar VII have, in attempting to mute the destructive effects of war, helped mute the horror of it as well. By the time the credits roll on “A Taste of Armageddon,” you won’t be wrong if you’re not exactly thinking of Starfleet as the good guys this time.

7) Space Seed

“Space Seed” introduced Star Tre k’s most famous antagonist, Ricardo Montalban ’s genetically enhanced 20 th century superman Khan Noonien Singh. The Enterprise comes across a long-lost vessel, the Botany Bay, that contains Khan and 84 of his crew. Soon, Khan is using his enhanced cunning to take control of the Enterprise.

One of the reasons Khan works so well as a foil for Kirk is because he’s both physically and mentally superior to the Starfleet Captain, but also shares Kirk’s charisma. He’s an easy bad guy to root for and his backstory raises some interesting questions about what Earth’s Eugenics Wars were like in the 1990s.

While “Space Seed” is Khan’s sole appearance in the series, Montalban would famously reprise the role for Nicholas Meyer ’s Star Trek II: The Wrath of Khan in 1982. Benedict Cumberbatch would then play an alternate reality version of the character in Star Trek Into Darkness .

The Enterprise comes into territorial conflict with the Gorn, a race of reptilian creatures with whom Starfleet has never dealt. When conflict threatens to breaks out with the Gorn ship, both vessels are disabled an incredibly powerful race called the Metrons. To settle the issue, the Metrons will have Captain Kirk face off against the Gorn captain on a rocky desert planet. Even though the Gorn easily outmatches the Starfleet Captain physically, Kirk has a few tricks up his sleeve.

As with “A Taste of Armageddon,” “Arena” focuses on a transference of a larger conflict into a smaller one. While the former dealt a bit more with the ethics in doing so, “Arena” places more like a sporting event. On the bridge of the Enterprise, the crew is helpless to do anything but watch as Kirk and the Gorn captain battle to the death.

“Arena” has become one Star Trek’s most famous episodes primarily due to its incredible Gorn costume. While it has a degree of 60s sci-fi cheese, it still looks quite a bit better than attempts to later bring back the Gorn species with CGI on Star Trek: Enterprise .

5) The Trouble with Tribbles

One of Star Trek’s most famous episodes brings the Enterprise to Space Station K-7 where there is some fear that visiting Klingons might disrupt the delivery of much a needed grain to an Earth colony. Meanwhile, Nichelle Nichols ’ Uhura goes shopping and purchases a Tribble, a small purring creature that looks like a ball of hair. Unfortunately, it turns out that Tribbles are born pregnant and they begin to multiply exponentially.

“The Trouble with Tribbles” is a fairly light-hearted adventure that also feels like a day in the life for the crew of the Enterprise. Kirk’s attempts to deal with Federation politics wind up taking a back seat to the tribble problem as a memorable Star Trek species is born.

For the franchise’s 30 th anniversary, Star Trek: Deep Space Nine would return to “The Trouble with Tribbles” with an episode called “Trials and Tribble-ations”. In it, the crew travels back in time to prevent a plot to assassinate Captain Kirk during the events of “The Trouble with Tribbles,” digitally inserting actors into the background of the original episode with an adventure that makes use of impressive visual effects to tell a concurrent narrative.

4) Mirror, Mirror

Quite arguably the definitive pop culture example of parallel realities, “Mirror, Mirror” finds Kirk, McCoy, Scotty and Uhura in a transporter accident that swaps them with their counterparts from an alternate timeline. While the Enterprise is negotiating for dilithium on behalf of the United Federation of Planets in the regular timeline, the alternate history sees an aggressive Enterprise take the valuable resources by force in the name of the Terran Empire.

“Mirror, Mirror” is particularly famous for having a goateed Spock in the mirror universe. The “evil” goatee has become iconic in pop culture to represent all kinds of evil twins and alternate reality doppelgangers.

Although there were several novels and comic books that made use of the Mirror Universe, it would be nearly three decades before the timeline would return in the official Star Trek canon. The second season Star Trek: Deep Space Nine episode “Crossover” would make visits to the parallel timeline a nearly annual event for the spinoff series.

3) Balance of Terror

When the Enterprise encounters a Romulan vessel, the two ships come into combat and soon leave one another disabled and floating in space. Each races to make repairs before the other to claim victory in an encounter that reveals surprising new details about an old Starfleet foe.

In the Star Trek timeline, Earth experienced a brief but intense war with the Romulan Star Empire about a century earlier. Because the combat occurred in space, Earth never learned what Romulans look like. Here, it’s revealed that they’re a warlike offshoot of the Vulcan species, leading to some immediate tension between Spock and one of his crewmates.

A throwback to submarine thrillers like The Enemy Below and Run Silent, Run Deep , “Balance of Terror” is elevated by Mark Lenard’s pre-Sarek appearance as the commander of the Romulan vessel. As the viewpoint shifts from the Enterprise to the Romulan vessel, we find that he and Kirk are not so different in their adherence to their duty.

2) Amok Time

The first episode of Star Trek ’s second season reveals a Vulcan secret. Every seven years, the species goes through a mating cycle in which they must return to Vulcan and take a mate. Unfortunately, Spock’s would be mate demands the koon-ut-kal-if-fee, a battle to death between her suitor and a champion of her choosing. When she chooses Captain Kirk, both officers must fight in a Vulcan ceremony that will not end until one of them is dead.

Not only does “Amok Time” deliver on its promise of an epic Kirk vs. Spock fight to the death, but it’s a great example of Spock growing to trust and appreciate his crewmates. It’s an intensely personal story for Spock and it culminates with a fantastic line from the character.

“After a time,” Spock tells a Vulcan woman who has rejected him in favor of another suitor, “You may find that having is not so pleasing a thing after all as wanting. It is not logical, but it is often true.”

For that line alone, “Amok Time” deserves its honored place in Star Trek history.

1) The City on the Edge of Forever

It’s pretty much universally understood that the penultimate episode of Star Trek ’s first season is the franchise’s very finest story. Having accidentally injected himself with a drug that drives him crazy, DeForest Kelley ’s Dr. McCoy beams down to an alien planet where an ancient gateway, the Guardian of Forever, allows passage through time and space itself. A crazed McCoy travels back to Earth in the 1930s and does something that stops Starfleet from having ever existed. With no other choice, Kirk and Spock travel back themselves in the hopes of restoring the timeline.

It’s in the 1930s that Kirk and Spock meet Joan Collins ’ Edith Keeler a thoroughly lovely young woman who has dedicated herself to helping the less fortunate in a New York Mission. As they search for McCoy, Kirk begins to develop a relationship with Edith. And then the bad news hits: in order to fix the timeline, Edith Keeler must die.

The need for Edith Keeler to die is made all the more tragic by the fact that she’s not in any way a bad person. Spock explains that her success at organizing a pacifist movement in the United States will lead to the United States delaying its entrance into World War II. It is peace that she’s fighting for and in the name of peace that she must be sacrificed.

“The City on the Edge of Forever” is, simply, the epitome of what science fiction has to offer, bolstered by an original script by legendary author Harlan Ellison and a perfect romance between William Shatner and Joan Collins.

“Let me help,” smiles Kirk to Keeler as they a New York street together, he comments on her choice of words. “A hundred years or so from now, a famous novelist will write a classic using that theme. He'll recommend those three words, even over 'I love you’.”

For all the franchise’s many adventure across space and time, none come quite close to the simple, tragic elegance of “The City on the Edge of Forever”.

The 50 best Star Trek episodes ever

What kind of fools would attempt to take over seven hundred hours of television spread out over five different series, review them and then distill them down to a list of the fifty best episodes? You're looking at them. What follows is Empire 's breakdown of the best that Star Trek has had to offer over the past half century. Engage!

Here is a list of our favourite Star Trek episodes counting down from the 50th to the number one greatest. So sit back and get comfortable (this may take a while...)

50. Q Pid ( TNG )

John de Lancie's Q is a recurring pain in the arse for the crew of the Enterprise, but no one can say he isn't any fun. This time, when Picard rejects his offer to help mend some fences with a lady friend, he transports a number of the crew to Sherwood Forest, planting them straight into a Robin Hood adventure. Standout moment? An indignant Worf proclaiming, "I am not a merry man!"

49. Lower Decks ( TNG )

As The Next Generation was winding down its television run, the writers decided to shift gears and focus on a group of junior officers, following them as they interact with the primary crew while vying for promotions. An entirely different, very welcome change of pace that proves hugely enjoyable – despite a somewhat downbeat ending.

48. Endgame ( VOY )

Cut through all the technobabble and what you're left with is an intriguing tale of an older Admiral Janeway, 10 years after Voyager's return home, deciding to go back in time to help her younger self defeat the Borg and get her crew home from the Delta Quadrant before history unfolds the same way. It's no All Good Things , but it wraps things up well and gives Kate Mulgrew a real chance to shine in dual roles.

47. Hard Time ( DS9 )

In what is a dark take on TNG 's The Inner Light , O'Brien is found guilty of espionage by an alien race that implants the memory of years of harsh imprisonment, which in reality lasted just a few hours. Much of the episode is focused on his trying to readjust to his normal life. A bravura performance by Colm Meaney who sells the trauma spectacularly.

46. In A Mirror Darkly ( ENT )

Oh, Enterprise , why did you wait so long to live up to your own potential? This episode from the final season takes place in the Mirror Universe, serving as a sequel to season three of the original series' The Tholian Web and a prequel to that show's Mirror, Mirror. Imaginative and most of all fun, it's just unfortunate that executive producer Manny Coto couldn't tie the show further into the events of the '60s series.

45. Sacrifice Of Angels ( DS9 )

War brings a price, and the price paid on Deep Space Nine is very real. The conclusion of a six-episode arc opening season six, it's all about Sisko and his people reclaiming DS9 from the Cardassian/Dominion alliance. Tremendous action, espionage and yet another example (collect them all) of the way this series the consistently the best of the entire Trek franchise.

44. Phage ( VOY )

Executive producer Brannon Braga once said that Voyager should be The X-Files of space, and this episode shows it meeting that potential. An alien race in the Delta Quadrant, suffering from an incurable disease, prolongs the life of its people by transporting vital organs out of unwilling donors and transplanting them. It's chilling as hell, yet by the end – in true Star Trek fashion – you somehow end up feeling sympathy for them.

43. Balance Of Terror ( TOS )

The Federation's (and our) first look at the Romulans in what is essentially a submarine thriller in space. Mark Lenard (who would go on to play Spock's father, Sarek) is the Romulan commander who recognises many of his own traits in Kirk, finding him a worthy adversary. The exploration of bigotry (the Romulans are an offshoot of Vulcans) underpins a piece of television that manages to conjure genuine suspense as one commander attempts to outmaneuvre the other with only one possible outcome.

42. Relics ( TNG )

James Doohan reprises his original series role of Scotty in this Next Generation episode that sees Scott being rescued from the transporter of a long-missing transport ship and having to adjust to life in the 24th Century. The focus is strongly on Doohan and Levar Burton's Geordi LaForge, and serves as an effective exploration of ageism and the fight against obsolescence. One of Doohan's finest turns as Scotty, and while it's commonplace now (even in fan films), seeing Picard walk through a recreation of the original '60s bridge on the holodeck is very cool.

41. Arena ( TOS )

An alien race forces Kirk to fight the lizard-like Gorn, theoretically to the death, but the good captain refuses to carry out the fatal blow. By showing mercy, Kirk demonstrates the superiority of humanity, impressing the aliens and showing how far his race has come. It sounds simple, but the execution (despite the now infamously bad Gorn costume) is first rate.

40. The Offspring ( TNG )

In what could unofficially be viewed as a sequel to the season two TNG episode The Measure Of A Man , Data creates an android "daughter" (Hallie Todd's Lal) and attempts to instruct her in the ways of life. Moving on a number of levels, most notably watching Lal evolve in ways Data could never hope to as he fights to keep her free of Starfleet's science division. Co-star Jonathan Frakes made his directorial debut on this episode, paving the way to his taking on 1996's First Contact .

39. Past Tense ( DS9 )

As conceived by Gene Roddenberry, Star Trek was supposed to take modern social issues and examine them through the prism of the future. Embracing that philosophy, the writers of Deep Space Nine took on Los Angeles' growing homeless problem and postulated a frightening future (through DS9 's past) in which the homeless are herded into city sectors and all but abandoned there. Avery Brooks' Sisko finds himself having to step into history to make sure the time stream stays on course.

38. Datalore ( TNG )

Not everything in season one of The Next Generation felt like a retread of what had boldly gone before. Data's 'brother', an early model named Lore, shows up and Brent Spiner does a stand-up job portraying two very different versions of his character. Not dissimilar to the original's The Enemy Within .... which means that, yes, the plot is something of a retread, but in this case it's a very good retread. Okay?

37. Broken Bow ( ENT )

Enterprise comes out of the gate swinging with this two-hour premiere that efficiently sets up the series and establishes that the early stages of Starfleet were very different from what it would ultimately become. The promise of the show is nicely set up (disastrous theme song notwithstanding), but, sadly, it would seldom live unto it.

36. The Andorian Incident ( ENT )

The blue-skinned Andorians return for the first time since the original series and score in a big way. The plot – about a secret Vulcan plot against them – is interesting, but what crackles is the instant chemistry between Jeffrey Combs' (Weyoun on DS9 ) Shran and Scott Bakula's Captain Archer. It's a relationship that would serve Enterprise well for many episodes to come.

35. Little Green Men ( DS9 )

Now we know what went on in Roswell, New Mexico in 1947: A trio of Ferengi and a shapeshifter crash-landed in the desert and threw members of the US government into disarray. Deep Space Nine goes full-out comedy in what is this series' equivalent of The Trouble With Tribbles (aside from the episode that actually re-visits the Tribble episode, that is, but more on that later).

34. I, Borg ( TNG )

When a member of the Borg, eventually given the name Hugh, breaks away from the collective, it raises issues of whether or not genocide (to be accomplished by infecting Hugh and returning him into the collective) for the greater good is warranted. Seriously, when is genocide a good idea?

33. Duet ( DS9 )

A highlight of Deep Space Nine 's first Season, and essentially a two-person drama between Nana Visitor's Kira Nerys and guest star Harris Yulin as the Cardassian war criminal Marritza. Amazing back and forth moments between the actors, and riveting in the revelations that arise.

32. Time’s Arrow ( TNG )

An audacious adventure that begins with the discovery of Data's head among relics from 19th Century San Francisco and goes on to include aliens sucking the life force out of humans in the past, time travel, Whoopi Goldberg's Guinan and Mark Twain(!). It's utterly insane, but imaginative and enormous fun.

31. The Wounded ( TNG )

The Next Generation goes a bit Heart Of Darkness as Picard must stop a renegade starship captain from committing acts of war against the Cardassians, despite the fact that his military suspicions about them are true. Great tension as Picard is torn between his duty as a Starfleet officer and the grim reality of the political situation.

30. What You Leave Behind ( DS9 )

The two-hour series finale of Deep Space Nine . While far from the best series-ender ever, it's an exciting and moving close to a series that still had so much life left in it. Major arcs are brought to an end and entirely new ones are begun (and left dangling), but the most important thing is that the show left on its own terms and in its own way.

29. Unification ( TNG )

Leonard Nimoy's Spock comes to The Next Generation in what was a tie-in to 1991's Star Trek VI: The Undiscovered Country . The plot, about Spock's political attempts to reunite the Vulcan and Romulan people, is fine, but the joy comes from watching Nimoy interacting with Patrick Stewart's Picard. It is, in a word, fascinating.

28. Home Front/Paradise Lost ( DS9 )

Paranoia about changeling infiltration provides Admiral Leyton with an excuse to manipulate the militarisation of Starfleet against its enemy. It's up to Sisko and O'Brien to reveal the truth and preserve everything the Federation stands for. Not a million miles away from the plot of 2013's Star Trek Into Darkness , only better.

27. For The Uniform ( DS9 )

Once again the writers and Avery Brooks prove that Sisko is unlike any other Starfleet captain, as a tense game of galactic cat-and-mouse plays out between him and his former head of security Michael Eddington, who revealed himself to be a traitor and member of the rebel organisation the Maquis.

26. Future Imperfect ( TNG )

Jonathan Frakes gets to shine as Riker when he awakens sixteen years in the future in what are very different circumstances. Initially trying to adjust to this new life, inconsistencies lead him to try and discover the truth. As it turns out, nothing is as it seems. Certain elements play like an homage to Star Trek 's first pilot, The Cage .

25. Year Of Hell ( VOY )

A glimpse into what Voyager could (and should) have been: a gritty two-part adventure that follows the starship over the course of a year where it's constantly fighting for survival, and barely being held together. Disappointingly, It all gets reset at the end, but it's an incredibly dark journey and features a delightfully villainous Kurtwood Smith as Annorax.

24. This Side Of Paradise ( TOS )

Spock is able to reveal the depths of his emotion thanks to alien spores that have affected most of the crew, who are enjoying life on an idyllic planet. This also serves as a rare love story for Spock, and his final moment, once he's been restored to his logical self, is heartbreaking.

23. Our Man Bashir ( DS9 )

The name's Bashir. Julian Bashir. This homage to early Bond films sees the station's doctor in the role of a suave super spy, playing out a spy story in the form of a holosuite adventure (with very real consequences). The cast clearly had a whale of a time throughout, and with good reason.

22. Way of the Warrior ( DS9 )

For anyone who may not be enamoured with the early episodes of Deep Space Nine , this one should be your starting point. It's where the show becomes far more serialsed, tensions increase between the Federation and the Klingon Empire (paving the road towards the Dominion War), Michael Dorn joins the show as TNG 's Worf and Avery Brooks comes to life like never before as Sisko after he shaves his head and grows a goatee.

21. Space Seed ( TOS )

There's not much that needs to be said about this one beyond the fact that it marked Ricardo Montalban's debut as 20th Century genetic superman Khan Noonien Singh, and ultimately planted the seeds for what would, fifteen years later, become The Wrath Of Khan . The scenes between Montalban and Shatner (outside of a dopily resolved fist fight) are gold.

20. Q Who ( TNG )

From the imagination of executive producer Maurice Hurley came this Season Two episode that had John de Lancie's Q propel the Enterprise to the Delta quadrant where they encounter the Borg for the first time. One of the few episodes of TNG to reveal space to be a genuinely scary place.

19. Brothers ( TNG )

Brent Spiner does triple duty as Data, his brother Lore and their "father," Dr. Soong. The story itself — an attempt by Soong to provide Data with an emotion chip that Lore ultimately steals — is not half as memorable as the actor's three distinct performances.

18. Trials And Tribble-ations ( DS9 )

Now this was the way to celebrate Star Trek 's 30th Anniversary as the producers of Deep Space Nine crafted a story that took Sisko, Dax, Bashir and O'Brien and dropped them right in the middle of the original series' "The Trouble With Tribbles." Great fun and top-notch effects work that allowed this crew to interact with that one.

17. The Measure Of A Man ( TNG )

The first real evidence that The Next Generation was establishing its own identity as a series came in this Season Two episode. Picard defends Data's right to self-determination against a scientist who desires to dismantle him to create a number of similar androids. An insightful script by Melinda Snodgrass, and a standout performance by Brent Spiner as Data.

16. Chain Of Command ( TNG )

In this instalment of Keeping Up With The Cardassians, Picard is made a prisoner of war during a covert operation against the alien race. He's ultimately tortured by David Warner's Gul Madred, and the psychological machinations that follow provide some of TNG 's most powerful moments, and arguably Stewart's best performance in the role. "There are FOUR LIGHTS!"

15. The Enemy Within ( TOS )

Yes, you have to look beyond some stereotypical Shatnerisms, but overall William Shatner is stunning to watch in this episode as Kirk is, as a result of a transporter malfunction, split into good and evil duplicates of himself. A psychological study of the requirements for an effective starship captain. Written by Twilight Zone scribe Richard Matheson .

14. Scorpion ( VOY )

Often referred to by fans as 'The Breast Of Both Worlds', this two-parter introduces Jeri Ryan as Borg crew member Seven Of Nine, though her sprayed-on silver uniform wouldn't make an appearance straight away. Despite being a transparent attempt to 'sex up' the show, it was a tremendous introduction for the character and, more importantly, gave Voyager a much-needed kick up the arse in terms of both drama and conflict.

13. In The Pale Moonlight ( DS9 )

Starship captains have a tendency to bend the tenets of the Federation (we're talking to you, James T.!), but in this one Sisko pretty much snaps them in half as he manipulates the Romulans into joining the Federation in war against the Dominion. A powerful personal dilemma with no easy solutions.

12. Mirror, Mirror ( TOS )

Kirk, McCoy, Scotty and Uhura find themselves in a parallel, more savage universe where the Federation is the Empire and is essentially feared like the Klingons. Be sure to check out alternate Spock, who wears the goatee of evil.

11. All Good Things ( TNG )

The series finale of The Next Generation bookends its premiere, Encounter At Farpoint , as Q (John de Lancie) continues humanity's trial. Taking place in three time periods (the pilot, the present and the future), its scope is epic, its themes powerful and it's all so well executed that it probably should have been TNG 's first feature film.

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10. The Inner Light ( TNG )

To ensure that memory of a civilisation survives its passing, a probe affects Picard's mind to make him live an entire lifetime among its people, while only minutes pass on the Enterprise itself. In three quarters of an hour, Patrick Stewart somehow makes you really believe in the love and loss of a life well lived – all in the blink of an eye.

9. The Doomsday Machine ( TOS )

A tense thriller that serves as a contrast in command between Kirk and Commodore Matt Decker (William Windom). After losing the crew of his ship, the Constellation, to a galaxy-roaming doomsday device, Decker is so driven by vengeance that he could very well sacrifice the Enterprise in its pursuit.

8. The Trouble With Tribbles ( TOS )

For the first time, Star Trek proved that it could be funny without losing any of its integrity. Purring furballs, Klingons, bar fights and great comic bits for Shatner to play all combine to make up a true classic. Remember: don't feed them!

7. The Visitor ( DS9 )

Jake Sisko grows up to be Tony Todd in this tale of Jake attempting to cope with the seeming death of his father, while being filled with the lingering hope that he may somehow be able to set things right. A stirring study of a father/son relationship and the weight of a guilt that spans decades.

6. Darmok ( TNG )

Quite possibly the perfect embodiment of the Star Trek philosophy. Two races, represented by Picard and the Tamarian's Dathon (whose people only speak in metaphors and cultural references), must bridge a language gap to establish relations between their people in what becomes a life and death struggle. Paul Winfield ( The Wrath of Khan ) guest stars as Dathon.

5. The Best of Both Worlds ( TNG )

After floundering for a couple of seasons, The Next Generation came into its own with the arrival of exec producer Michael Piller and this tale of the Enterprise's battle with the Borg, which features Picard's transformation into Locutus. From this moment on, resistance to TNG was futile.

4. Far Beyond The Stars ( DS9 )

Emotionally fragile, Sisko abruptly finds himself as science-fiction writer Benny Russell in 1950s New York. A tour de force performance by star/director Avery Brooks as Benny deals with the racism of the time. We're given the suggestion that the events of DS9 (and therefore the entire Star Trek universe) has sprung from his imagination. Added bonus: seeing much of the cast out of makeup.

3. Yesterday's Enterprise ( TNG )

The Federation is getting its arse soundly kicked by the Klingons in this time-altered universe, and Picard must figure out what to do with the Enterprise-C, a ship out of time whose arrival seems to have changed the course of galactic history. This (alongside Chain Of Command ) is about as gritty as TNG ever got and is hugely enjoyable as a result.

2. The Devil In The Dark ( TOS )

It looks like a shag carpet and has a vicious streak a mile wide, but it's actually a mother protecting its young from Federation miners. An episode that perfectly encapsulates the Trek philosophy of overcoming our differences and the personal favourite of Shatner, whose father died during filming.

1. The City On The Edge Of Forever ( TOS )

Starship captain meets social worker in the past. Starship captain falls in love with social worker. Starship captain sacrifices social worker for the sake of the universe. Social worker happens to be played by Joan Collins. Writer Harlan Ellison hates it, everyone else loves it. Star Trek at its absolute best.

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The 10 best Star Trek: The Original Series episodes, ranked

It’s hard to imagine today, but back in the late 1960s, the original Star Trek was not considered a hit. The ambitious science fiction series was constantly on the brink of cancellation and was cut short only three years into its planned five-season run.

10. Mirror, Mirror (season 2, episode 4)

9. a taste of armageddon (season 1, episode 24), 8. the menagerie, parts i and ii (season 1, episodes 12 and 13), 7. the doomsday machine (season 2, episode 6), 6. the corbomite maneuver (season 1, episode 11), 5. the devil in the dark (season 1, episode 26), 4. the trouble with tribbles (season 2, episode 15), 3. where no man has gone before (season 1, episode 4), 2. the city on the edge of forever (season 1, episode 29), 1. balance of terror (season 1, episode 15).

However, it’s important to put Trek ’s apparent failure into historical context as, given that most markets in the U.S. had only three television channels to choose from, even a low-rated show like Star Trek was being watched by about 20% of everyone watching television on a Thursday night, or roughly 10 million households. This year’s season of HBO’s Succession was viewed by roughly 8 million households a week , which makes it a hit by today’s standards. Star Trek ’s audience only grew once it went into reruns in the early 1970s, and by the time Star Trek: The Motion Picture hit theaters in 1979, it was a genuine cultural phenomenon. Today, the Star Trek franchise is considered one of the crown jewels of the Paramount library.

Though arguably outshined by its most prosperous spinoff, Star Trek: The Next Generation , Star Trek: The Original Series holds up remarkably well for a vision of our future imagined nearly 60 years in our past. It’s a space adventure series that tackles social or political issues from what was, at the time, a daring and progressive perspective informed by the contemporary civil rights movement, sexual revolution, and backlash against the Vietnam War. Conveying these values through fanciful science fiction didn’t only allow its writers to get away with a lot of subversive messages, it also delivered them in a way that remains fun to watch decades later — fun enough that fans are willing to forgive when its ideas, or its special effects, crumble under modern scrutiny.

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These 10 episodes, however, unquestionably stand the test of time, and thanks to the continuity-light nature of mid-20th century television, any one of them could be your first Star Trek episode. (Be aware, however, that the order in which classic Trek episodes are listed varies depending on the source. For our purposes, we’re using the numbering from streaming service Paramount+ .)

Even if you’ve never seen an episode of Star Trek , you’re bound to be at least a little familiar with Mirror, Mirror through cultural osmosis. In this 1967 classic, Captain Kirk (William Shatner), Dr. McCoy (DeForest Kelley), Lt. Commander Scott (James Doohan), and Lt. Uhura (Nichelle Nichols) are accidentally transported to an alternate universe, where they encounter dastardly evil versions of their beloved shipmates. Instead of the benevolent United Federation of Planets, this ship serves the fascist Terran Empire, which threatens to annihilate a peaceful planet for refusing to submit to itsrule. Our heroes are forced to pose as their evil counterparts while they search for a way home and try to avert the genocide they’ve been ordered to perform.

This all sounds heavier than it is — like much of classic Trek , Mirror Mirror is very camp, with brightly colored costumes, over-the-top performances, and a general sense of fun. The cast is clearly having a ball playing the wicked versions of their characters (or playing the good versions of their characters playing the wicked versions), and it’s no wonder why multiple future incarnations of Trek would return to the Mirror Universe, usually for wacky adventure episodes. (For a more grim and brutal take on this same concept, visit the back half of Star Trek: Discovery ’s first season.) However, Mirror, Mirror still comes complete with Trek ’s famous humanist optimism, as Kirk tries to convince this universe’s menacing, bearded Spock (Leonard Nimoy) that regimes ruled by fear are unsustainable and, therefore, illogical. Given enough time, peace and cooperation will always win out over hate and violence.

A Taste of Armageddon may not appear on many “Best Of” lists, but it’s 100% pure, uncut Star Trek . In this episode, Kirk and company visit Eminiar VII, a seemingly peaceful planet that is, in fact, embroiled in a centuries-long war with a neighboring world. Rather than fire actual bombs at each other, the combatants conduct simulated attacks, determine the hypothetical death toll, and then order the “dead” citizens to report to disintegration chambers. When Kirk and his landing party are recorded as casualties, they decide to put an end to Eminiar VII’s supposedly “civilized” method of warfare.

While Kirk arguably has no right to interfere with how this sovereign planet conducts its affairs, the point of A Taste of Armageddon is to reflect on America’s attempt to make constant military conflict more palatable, or even invisible to the average American. Or, in a larger sense, it’s a commentary on the ease with which a culture can become accustomed to death and violence, so long as it’s part of an established routine. Because these simulated bombings leave homes, industry, and even the military infrastructure itself totally unharmed, it’s easy to forget that Eminiar VII is even at war — that is, until it claims your life or the life of someone you love.

When even these losses are framed as necessary sacrifices to maintain normalcy, it minimizes the incentive to make peace. Kirk (and, by extension, writers Robert Hamner and Gene L. Coon) argues that war is revolting no matter how much you dress it up, and that it must be brutal, terrifying, and omnipresent for all involved, or else it will never stop. The past half-century of perpetual U.S. military intervention abroad has proven this thesis to be chillingly accurate.

If you’re watching Star Trek on Paramount+, you’ll notice that the episode it has listed as “season 1, episode 1,” The Cage , isn’t exactly the show you were expecting. Instead of the famous Captain James T. Kirk, the USS Enterprise is under the command of Captain Christopher Pike (Jeffrey Hunter), and apart from Mr. Spock — who smiles?! — the rest of the crew is also unfamiliar. That’s because The Cage is Star Trek ’s original pilot episode, which was rejected by NBC, leading to a second pilot being commissioned with a new cast and modified tone. The Cage wouldn’t air as its own episode until 1988, but during production of Star Trek ’s first season in 1966, a budget crunch led to writer/creator Gene Roddenberry repurposing footage from the already-completed pilot into a new script in the form of flashbacks.

This fiscally minded decision endowed Star Trek and its characters with a history, instantly making the universe a bigger and more interesting place. The two-part Menagerie sees Spock, the only remaining character from the original cast, commandeer the Enterprise for the sake of its previous captain, Christopher Pike. On the way to a forbidden planet, Spock uses mysterious footage from an adventure 13 years in the past to explain his rash actions.

If you’ve already watched The Cage , then The Menagerie will seem like a glorified clip show, in which Kirk and company spend half the runtime watching a previous episode. However, before the streaming era, The Cage was usually the last episode of The Original Series that a fan would see, rather than the first. In recent years, however, The Cage and The Menagerie have taken on a new role, as bookends to the adventures of Christopher Pike, as portrayed by Anson Mount on modern spinoff Star Trek: Strange New Worlds . Strange New Worlds (as well as the second season of Star Trek: Discovery ) take place after The Cage , but before The Menagerie , allowing us to get to know Kirk’s predecessor in his own context, as well as developing the bond between Pike and Spock that will eventually drive the Vulcan to mutiny. Even without any of this context, however, The Menagerie is an exciting two-hour event, an eras-spanning mystery that will make you wonder why NBC passed on the Star Trek pilot in the first place.

Due to the production constraints of 1960s television, the original Star Trek didn’t often aim for large-scale, awe-inspiring space action. The Doomsday Machine is the closest that classic Trek ever came to “epic,” and as compelling a story as it is, it’s also Exhibit A as to why such a thing was impractical with the resources available. Though its original effects required no small amount of ingenuity (they couldn’t afford to give their Enterprise model battle damage, so they bought one off the rack from a toy store and distressed it), the results look mighty corny on a modern high-definition television.

Still, the episode gained fame as boasting the largest-scale action of the series, as the Enterprise teams up with her badly damaged sister ship, the USS Constellation, to take on a huge planet-eating weapon. It also presages a theme that would become common in Star Trek feature films , as the Constellation’s grief-stricken Commodore Matt Decker (guest star William Windom) embarks on a foolhardy quest for revenge against the monster that bested him. (Trek would revisit Herman Melville’s Moby-Dick in Star Trek II: The Wrath of Khan and Star Trek: First Contact .)

The episode still works in a cheesy B-movie sort of way, which some fans would argue is the way it should still be enjoyed. However, when the series was remastered for high definition in the mid-2000s, the decision was made to recreate most of the special effects shots for the series using modern technology, since the originals were never expected to hold up to modern standards. Most of these recreations are very faithful, to the extent that uninitiated viewers might not even realize they’d been replaced. In the case of The Doomsday Machine , however, the producers and effects artists returned to the episode’s original script and attempted to realize writer Norman Spinrad’s initial vision for the space battle sequences. The team at CBS Digital doesn’t sacrifice the overall aesthetic of the series, but they do give us a peek at what The Doomsday Machine — and by extension, the entire Original Series — might have looked like with a feature film budget.  

There may be no better introduction to the character of James T. Kirk than The Corbomite Maneuver . The first episode produced after the series was picked up (though it didn’t air until later in the season), The Corbomite Maneuver finds the Enterprise at the mercy of a massive alien vessel and accused of trespassing in its territory. Unable to outrun or outgun his mysterious adversary, Kirk does what he will later become famous for doing — he cheats. Or, rather, he changes the conditions of the contest from one of technological superiority to one of cunning and guile. In the process, we get to learn a bit about how each of the main characters handles the intense stress of a seemingly hopeless scenario, contrasted against the more relatable Everyman Lt. Bailey (guest star Anthony Call). Though the action rarely leaves the bridge of the Enterprise, it is, in its own way, one of the most thrilling episodes of the series.

Moreover, The Corbomite Maneuver sets the tone for Star Trek as a series. It’s an hour of adventure that is punctuated by moments of thoughtful introspection, warm friendship, and corny jokes. Its depiction of Starfleet and the Enterprise are clearly inspired by military tradition, but the message of the episode is one of compassion and patience rather than conquest. These are scientists, not soldiers, and while they experience fear and doubt, none of their human frailties are a match for their curiosity. If this is what the future of humanity looks like, we want to be a part of it.

When Star Trek is running on full thrusters, it is equal parts silly and profound. In The Devil in the Dark , the Enterprise is sent to the aid of a mining colony where workers are being hunted and killed by an unstoppable monster made of rock. We know that the monster is made of rock because the characters say so; It looks a lot more like it’s made of spray-painted Styrofoam and a shag rug. But as the tension rises and the mystery deepens, the goofiness of the rock monster becomes irrelevant, or even a boon to the story.

Though it begins as a hunt for a merciless alien creature, The Devil in the Dark becomes a story about prejudice and the universality of what we (in our limited earthly experience) would call “basic human rights.” This message is conveyed through cheesy 1960s TV production values and some very hammy acting, but the results are pure and unpretentious, the sort of storytelling that is equally impactful on a jaded adult and a wide-eyed child.

Here in the post-post-postmodern 2020s, we’re all total pros at deconstructing genre tropes. The practice of subverting the audience’s expectations as to what kind of story they’re watching or who the good guys and bad guys are wasn’t new in 1967, either, but in the sci-fi film and television of the era, the big scary monster is usually just a big scary monster. The Devil in the Dark  exemplifies one of Star Trek ’s most enduring themes: that the unknown might seem terrifying, but if you take the time to understand it, it’s actually beautiful.

Star Trek is always science fiction, but its format offers a lot of flexibility in terms of how to interpret that genre. Even within the course of a single series or season, most Star Trek shows alternate between a variety of tones and secondary genres, from grim political drama to steamy romance, or in the case of this episode, kooky workplace comedy. The Trouble with Tribbles pits Captain Kirk and his gallant crew against their most stubborn foe yet — bureaucratic red tape. Assigned to look after a container of grain that Federation administrators insist is gravely important, the Enterprise becomes entangled in a very silly misadventure involving an invasive species of adorable, self-replicating furballs. For a captain accustomed to dealing with high-stakes diplomacy and galactic defense, this is his worst workweek ever.

As lousy a time as Kirk is having, The Trouble with Tribbles is tremendous fun. It is neither the first, nor the last broadly comedic episode of Star Trek , but it is the gold standard by which all Trek comedies are measured. Like any good Trek, it has stakes, a fun science fiction premise, and charming moments of character, but everything is set just a little bit askew, and the characters have noticed. It isn’t parody, it’s situation comedy, only a situation that you’re unlikely to find yourself in unless you’re the crew of a Federation starship. Almost every subsequent Trek series would chase that Trouble with Tribbles heat at least once ( Star Trek: Lower Decks  is basically The Trouble with Tribbles: The Series ), with varying levels of success, but the original remains an untouchable classic.

After The Cage was rejected by NBC, Desilu Studios (under the leadership of comedy queen Lucille Ball herself) took a second swing at the series, with a new cast and a faster paced action-adventure story. This second pilot, Where No Man Has Gone Before , introduces William Shatner as Captain James T. Kirk, as well as George Takei as Lt. Sulu, James Doohan as Scotty, and Leonard Nimoy’s new, more stoic interpretation of science officer Spock.

The episode sees Kirk’s friend and mentee, helmsman Gary Mitchell (guest star Gary Lockwood), bombarded with cosmic radiation that grants him increasingly godlike powers. As Gary grows more dangerous and cruel, Kirk must weigh his love for his friend against his duty to his crew. The scenario immediately establishes the dynamic between Kirk and Spock (compassionate leader versus his coldly practical advisor), though Spock’s regular debate partner, the emotionally driven Dr. McCoy (DeForest Kelley), would not appear until Trek was ordered to series.

Where No Man Has Gone Before  is a little less fun and colorful than the episodes that followed, with a tone more closely resembling heady 1950s sci-fi films like Forbidden Planet or The Day the Earth Stood Still . In a way, it’s the classic Trek episode that feels the most like Star Trek: The Next Generation ; It’s talky, deliberately paced, just a little bit sterile. In Where No Man Has Gone Before , the galaxy is not only wondrous, but also eerie and unsettling. Had this been the tone the series stuck with, it might not have become a global sensation, but as a single episode, it stands out as one of the very best.

To some Trekkies, ranking The City on the Edge of Forever anywhere but at No. 1 is unthinkable. This time travel tale – written by sci-fi author Harlan Ellison and then heavily revised by Trek story editor D.C. Fontana — won Star Trek its first Hugo Award, and is widely considered to be the finest hour in the history of the series, if not the franchise as a whole. The episode’s legendary status is well-deserved, but we don’t quite have the heart to declare it the ultimate Star Trek episode, on account of how little of it takes place in the 23rd century or aboard the Starship Enterprise. The City on the Edge of Forever  is an outlier, and as such, naturally stands apart from the pack, giving it an edge in any conversation about Star Trek . Its placement here at No. 2 is sort of a counter to that advantage.

Make no mistake, however — despite mostly being set in New York in the year 1930, City on the Edge is Star Trek to its core. Sent back in time to correct an accidental alteration of Earth’s history, Kirk and Spock take up residence in a homeless shelter run by idealistic philanthropist Edith Keeler (guest star Joan Collins). Keeler turns out to be the key historical figure whose destiny must be fulfilled, but there’s a problem — Kirk has fallen in love with her. This romance complicates the mission, as Kirk and Spock are confronted with a grave moral dilemma with their entire reality hanging in the balance. Keeler is a visionary who believes in the beautiful future that Kirk calls home. But, in order for that future to exist, must something terrible be allowed to happen in her present? It’s an emotionally gripping tale that, if it had been told on a modern television show, would have changed its characters forever.

Star Trek is built on a central contradiction. It’s an adventure series about officers in a fleet that we are told, unconvincingly, is not a military organization, aboard a vessel that carries enough firepower to demolish a continent. It’s a show about peace in which things have a habit of blowing up. To reconcile this cognitive dissonance, one need only look to this key episode of The Original Series , Balance of Terror . In this early chapter, the Enterprise witnesses an Earth base being destroyed by an old enemy, the Romulan Empire. The Romulan ship has the ability to become invisible both to scanners and the naked eye, and attempts to escape to its own side of the neutral zone between their two territories before it can be apprehended.

The Enterprise is ordered to capture or destroy the Romulans before they make it home. Whether or not they succeed, there may be war. Kirk has his orders, and as we soon discover, so does the Romulan commander (guest star Mark Lenard), who is no happier about this turn of events than Kirk is. Throughout the episode, we cut back and forth between the action on the Enterprise and aboard the Romulan vessel, as two keen military strategists attempt to outmaneuver each other and stay alive, both locked in a struggle they’d rather had never begun.

Balance of Terror is a sci-fi twist on a submarine battle, but more than that, it’s a commentary on war, the rivalries between nations, and the wounds and prejudices they create. The Enterprise isn’t loaded with photon torpedoes because Starfleet is itching for a fight — it’s armed because sometimes it has to be, and when Kirk and his crew ride into battle, there’s nothing glorious about it. On the other side of any conflict is a person or people who have their own mission, their own values, and perhaps even their own reservations about fighting. It is not possible to avoid every fight, to preempt every war with diplomacy. But when blood is shed, there is no victory and there are no winners. There is tragedy, and there are survivors. And, finally, there’s the hope that the next time these two nations clash, they’ll be a little more willing to talk to one another.

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It's been a long hiatus for Doctor Who fans, but the series is back with a new 60th anniversary special called Doctor Who: The Star Beast. This is the first of three specials that will feature the Tenth Doctor performer David Tennant appearing as a new Fourteenth Doctor. Tennant's Doctor is also joined by Catherine Tate's Donna Noble, his former companion from the fourth season.

The Doctor has had numerous companions for his time travel adventures over the last six decades. But when compiling this list of the seven best Doctor Who companions, we decided to stick with the companions from the modern revival series that started in 2005. There is only one exception to that rule, and that's because the character in question had the unique chance to play a major role in both classic Doctor Who and in the modern era. But if you want to know who landed the top spot, you'll have to keep on reading. 7. Captain Jack Harkness

In the Futurama episode Where No Fan Has Gone Before, the wisecracking robot Bender describes Star Trek as having “79 episodes — about 30 good ones.” And, if we're being honest, Bender's not wrong. Across the franchise, there are now roughly 900 canonical installments, and out of a field that large, there are naturally dozens, even hundreds of entries that you can simply disregard. Of course, like any fanbase, Trekkies contain multitudes, and we don’t all agree on which episodes deserve the scrap heap. One fan’s space junk is another fan’s latinum, and there’s no accounting for taste. We’ve selected ten episodes from across the history of the franchise that some fans might tell you to skip, but that we think deserve your attention. Is one of your dark horse faves on our list? Have we gone to bat for an episode you wish would be erased from the space-time continuum? Follow us to the salvage yard and find out…

10. The Time Trap (TAS season 1, episode 12)

This year marks the 30th anniversary of The X-Files, one of the most popular genre shows in the history of network TV. Over the course of nine seasons, from 1993 to 2002, series creator Chris Carter and his team of writers took viewers inside some of the strangest and the most horrifying cases of the paranormal that they could imagine. Anything from aliens to demons and monsters was in play, while the show developed its own mythology and an overarching story.

In honor of the show's 30th anniversary, we're looking back at the 10 best episodes of The X-Files and ranking them from worst to best. Unlike some of the previous best-of lists for this show, we're not focusing only on the standalone episodes or the monsters-of-the-week installments. It's become fashionable to bash the show's mythology episodes because Carter and Company couldn't bring the story to a satisfying resolution. But those episodes were a large part of the reason why this show was so fantastic in its prime, and it would be a disservice to the series itself if we didn't give those stories their due. 10. Requiem (Season 7, Episode 22)

The 21 Best Star Trek Original Series Episodes, Ranked

"You know. 1966? 79 episodes, about 30 good ones," said Philip J. Fry of "Futurama" to the jarred, floating head of Leonard Nimoy. This is his animated opinion, of course, but a better question isn't how many are good, but how many of the original "Star Trek" episodes are great. Would you believe 21?

Determining greatness is subjective of course. Popularity isn't a fair indicator of quality, and some fan favorites are guilty pleasures, while others are fun but defective in ways that knock them down from great to merely good. Any episode's overall quality depends on multiple factors: the uniqueness of the premise, the quality of the writing, the story beats, the characterization, guest stars, action, music, production values, and even visual effects. 

Speaking of visual effects, we're not talking about the 15-year-old "remastered" CGI, which already look dated and cartoonish. We're going O.G. all the way. The criteria here is ranking these as the total package rather than the sum of their parts. With that in mind, here's a perhaps controversial list of the 21 greatest "Star Trek: The Original Series" episodes.

21. A Piece of the Action (Season 2, Episode 17)

Although humorous moments abound throughout the original "Star Trek," there aren't many outright comedy episodes. In fact, there are only three: "I Mudd," "A Piece of the Action," and "The Trouble with Tribbles." Most fans I know vote the straight "Tribbles" ticket, but that episode is merely cute-funny, whereas the over-the-top "A Piece of the Action," is actually genuinely funny. The script by Gene L. Coon is more absurd than "Tribbles" and features more comic business. The cherry on top was its helmer, James Komac, who was a gifted comedy writer and director of hundreds of episodes of shows including "Welcome Back, Kotter" and "Chico and the Man" (which he created).

This episode   is almost a meta-commentary and spoof on the "Star Trek" schtick of "strange new worlds" which end up being monocultures thinly based on Earth's history. Here we see why the Prime Directive exists: an entire civilization has modeled itself on the popular mythos of Roaring '20s Chicago mobs. It's literally Planet Cosplay, and an unintentional spoof of fandoms then and now. Two things keep it at this end of the list: it's shamelessly riffing on "Robin and the 7 Hoods" (1964), and it's almost irredeemably dumb. Fortunately, it's dumb fun, and fun enough to be among the best. "Right?" "Riiiiight."

20. Space Seed (Season 1, Episode 22)

You might be surprised that this comes in so low in a list of greats, but that it merits inclusion at all relies solely on the sheer screen presence and magnetism of its guest star. Khan Noonien Singh is an arrogant egotist and tyrant, but Ricardo Montalbán's confident performance makes him watchable. Minus him, the story defects would relegate this episode to merely "good." Many put this in their top 10, but I suspect that's because it basks in the reflected glow of its cinematic follow-up "The Wrath of Khan."

The script is serviceable but unmemorable and commits the sin of making our heroes foolish instead of making Khan's intelligence and cunning the real danger. Kirk hands this unknown and suspicious character unfettered access to the ship's technical library on a silver platter, and historian Marla McGivers is a pushover who betrays all her shipmates because she's a fangirl of brutish dictators.

Weak story aside, the episode does have strengths. All the performances are good, and the story moves along at a brisk pace. There's memorable dialog, and McCoy really shines when he isn't cowed by Khan holding a scalpel to his neck. There's also some of the best miniature effects work on the show, going to the expense of a custom-made model of the Botany Bay . Montalbán is what makes it a best episode at all, but he alone can't elevate it.

19. The Conscience of the King (Season 1, Episode 13)

This least "Star Trek"-y of "Treks" scores points for being just that. The series premise allows it to be a semi-anthology, able to shift genres without breaking format, so one week it's a psychological drama about the duality of human nature, another time it's about cold war proxies, or planet-killing doomsday machines by way of "Moby Dick," or — as in this case — a Shakespearean tragedy about mercy and revenge. Just As Hamlet must determine whether or not his uncle Claudius murdered his father, so must Captain Kirk determine if actor Anton Karidian is the man once known as Kodos the Executioner. 

Writer Barry Trivers cleverly frames his story within the play that informs it, a bit of dramaturgical license that permits a more theatrical approach. Take, for example, this bit of dialogue from Lenore Karidian: "There's a stain of cruelty on your shining armor, Captain. You could have spared him, and me. You talked of using tools. I was a tool, wasn't l? A tool to use against my father."

This episode exemplifies a shadowy aspect of Kirk's affairs rarely discussed in how he weaponizes romance to get what he wants. The ultimate irony is that he plays Karidian's daughter Lenore in order to get close to her father only to learn that she's been playing him. That it's so different is a double-edged blade that simultaneously makes it a best episode, but nowhere near the top. It was a great stretch for the show.

18. The Immunity Syndrome (Season 2, Episode 18)

This one barely edges out the not-dissimilar and more popular "The Doomsday Machine." Both feature the crew of a sister ship annihilated by a huge alien thing endangering life throughout the galaxy. But where "Doomsday" is a straightforward adventure story driven by an Ahab-like guest star, "Immunity" is more personal, as it features some great and properly motivated Spock and McCoy conflict. 

Too often Bones would goad Spock for no reason, but here their back and forth is professional: two scientists vying for an opportunity to study this alien organism, each feels himself the most qualified to take on what promises to be a suicide mission, and each, perhaps, choosing to make the sacrifice rather than let the other die. But it's Kirk who has to make the final, heartbreaking choice of which of his friends to send. That's classic "Trek."

Given its budget and the visual effects tech of the time, "Star Trek" was rarely able to get across truly alien life forms, but this is a notable exception, and the conceit that the Enterprise must enter the alien entity as a virus infects a cell is a nice twist. The visual effects of the space amoeba thing are fabulous and weird, something the 2007 remastered CGI does not improve on.

17. Day of the Dove (Season 3, Episode 7)

The third season has no classic episodes, but a few come close. "Day of the Dove" is the best of the bunch. The simple premise of exploiting bigotry between our heroes and their cold-war counterparts, the Klingons, works better than it ought. If you want to look for a message, the alien entity that fuels the very hatred and violence it feeds upon can be read as a stand-in for the military-industrial complex, which fans the flames of conflict in order to sell weapons in a perpetual feedback loop. Alternatively, you can just take it for a MacGuffin.

The nefarious influence of the alien entity memorably amplifies the slightest biases of the Enterprise crew, and it's uncomfortable to hear blatant racism coming of out our noble heroes' mouths, especially Scotty's attack on Spock. Michael Ansara plays Kang as no mere mustache-twirling bad guy, but as a shrewd enemy starship commander, an honorable warrior, and a fine opposite to Kirk. By turns personable, calculating, and violent, he's a model Original Series Klingon. Frankly, I'd rather watch him than Khan; your mileage may vary. It's got action. It's got character conflict for days. It's the best the third season has to offer, but it's not as great as the first and second-season entries coming up. 

16. Tomorrow Is Yesterday (Season 1, Episode 19)

The original "Star Trek" didn't play with time travel much, and when it did the results were either very good or they were horrid, with the backdoor pilot "Assignment: Earth" being the low point. "Tomorrow Is Yesterday" features the most offbeat teaser of the series, following an Air Force F-104 interceptor, with the visual punchline that the bogie it's after is the USS Enterprise. 

What follows is illogical as all get out, but the gimmick of the Enterprise being tracked as a UFO and having to undo the temporal damage it's done by being photographed and accidentally crushing that Air Force interceptor is great and the story milks it for all it's worth. No real depth here, but the fun is all in the plot events and reactions of the crew.

There's some great in-character stuff in the episode, including Spock's statement that he too doesn't believe in "little green men," and his one-star ranking of the Air Force film of the Enterprise as "bad photography." Kirk's playfully resigned responses to his Air Force interrogator are great, too. And, hey, Sulu even gets to get off the bridge. The main weakness is the "how does that work?" ending gimmick of beaming people back into their own bodies. Great, but not a classic.

15. Balance of Terror (Season 1, Episode 14)

A fan favorite for good reason, the episode depicts the loneliness of command as Kirk tries to seek and destroy a marauding alien vessel without triggering an outright war. Seeing some of the "lower decks" types makes the Enterprise feel more real and lived in and sells that Kirk's every decision has repercussions beyond the bridge. But it's Mark Lenard's perfectly pitched turn as the unnamed Romulan commander that's most memorable here. Torn over the ramifications of the performance of his duty, he's Kirk's equal in every way, and you can believe that he loses this battle not by dint of any personal failings but merely because his ship is outmatched by the much quicker and faster-firing Enterprise.

For 1966 the effects are great and largely still hold up. The Romulan ship is simple and distinctive, and the music is spot on. The main thing keeping it out of the top 10 is that it so baldly swipes elements of the films "Run Silent Run Deep" and "The Enemy Below," slapping pointed ears on the German Kriegsmarine story from the latter film, borrowing its war-weary commander and a subordinate fanatically loyal to their political leader. In "Arena," the show paid for the rights of the story it was cribbed from and credited the author. No such screen credit graces this obvious lift.

14. The Ultimate Computer (Season 2, Episode 24)

Kirk's infamous for offing overzealous computers (see: Landru in "Return of the Archons," Nomad in "The Changeling," and the androids of "I Mudd"), but his personal best computer kill is in "The Ultimate Computer." Here he doesn't merely meltdown the M5 Multitronic unit by confronting its flawed logic regarding its purpose; he aims a precise surgical strike at the chink he spots in its programming armor: appealing to the morality inherent in the memory engrams its all too human creator imprinted it with, causing it to reason it must die to pay for the sin of murder.

This episode is character-driven, with Kirk confronting his own redundancy and possible irrelevancy even as Spock and McCoy make their loyalty and friendship clear. Guest star William Marshall's turn as the deranged Dr. Daystrom is a standout, ranking among the best of the show.

All this drama is supported by some fine action, as M5 reduces a redshirt to a puff of smoke, photon torpedoes a robot ship, and then nearly destroys four sister ships of the Enterprise, actually killing the entire crew of one. Even the light ending — which often play as callous given the events which precede them in many episodes — is acceptable here because it's about Spock and McCoy, not Kirk. But it's still Kirk vs. the Computer, and those are never "Star Trek" at the very top of their game.

13. The Cage (Original Pilot)

Forget "The Menagerie" with its paper-thin envelope around the first pilot, repetitive courtroom scenes, and forced cliffhangers, all of which render it a solid but not great installment. But on its own "The Cage" is not just a great launchpad for what "Star Trek" is and would become, but an imaginative and well-executed story in its own right. Gene Roddenberry's script is smart, with the atrophied Talosian aliens a satirical stand-in for TV audiences who might rather live other people's fantasies than experience adventures of their own. While it's a bit talky and static in places, when they're in action it's great stuff — notably the laser cannon scene and Pike's illusory fight on Rigel VII.

Visually it's terrific. This was the most expensive episode ever made , and it shows. The sets, costumes, makeups, and many special effects are top-notch for a show of the era particularly the matte shot of the Rigel VII fortress. The pacing's a bit loose, the characters don't pop due to the largely meh casting, and "THE WOMEN!" Number One and Yeoman Colt secretly wanting to bone the Captain is cringeworthy. However, guest star Susan Oliver's performance is the standout here, followed by Leonard Nimoy as Spock. Ultimately, it's just as well that the far more energetic William Shatner stepped in to replace Jeffrey Hunter's less-than-charismatic version of Captain Pike .

12. Arena (Season 1, Episode 18)

If any episode of "Star Trek" is truly iconic, this is it. The action set piece on Cestus III is the biggest of any in the series, with running and jumping and explosions galore, a redshirt vaporization, a detonating tricorder, and a photon torpedo-sque mortar. Once back on the Enterprise, Kirk's dogged determination to overtake and destroy the enemy ship demonstrates the obsessive nature of his character, but communication with his alien foe plants a seed of doubt which ultimately empowers him to practice what he preached in "A Taste of Armageddon: " We're human beings with the blood of a million savage years on our hands, but we can stop it. We can admit that we're killers, but we're not going to kill today. That's all it takes. Knowing that we won't kill today."

Kirk doesn't kill, and it saves the day. It lands here amongst the best because the story ends with the overused first-season gimmick of the godlike entity — the others being Gary Mitchell, Charlie-X Evans and his Thasian truant officers, Trelane the god-child, and the Organians — but the Metrons are more a plot device than anything. The Gorn is a great and worthy adversary, even as its slow-motion gestures are laughable. Spock hanging a lantern on Kirk's cannon-building is a bit much, but hey, he's the costar and has to do something. 

11. Where No Man Has Gone Before (Season 1, Episode 3)

This might be a surprise but despite the second pilot weirdness of different uniforms, series crew regulars appearing not at all (McCoy, Uhura) or in different jobs (Sulu is an astrophysicist), and Spock's not-quite-there characterization and more severe makeup, the core "Star Trek"-ness is there in spades. Kirk makes a risky decision in the first act and must deal with the building consequences for the balance of the show, finally shouldering personal responsibility for his decision in the worst way possible: in order to save his ship and crew, he's forced to kill a subordinate shipmate and friend.

The episode looks great (being far more expensive than any regular production episode), repurposes the planet set built for the even more expensive first pilot, and features more optical effects than would be the norm for a production episode. Most importantly, William Shatner's Kirk projects leading-man charisma of the sort that's arguably what sold the show. It also delivers on Gene Roddenberry's original high-concept pitch of a "Wagon Train to the stars" where stories would focus on strong guest stars interacting with the recurring cast. The script is not without its flaws, and had Gary Mitchell been a tad more likable the drama would have played even better. Still, two thumbs way up.

10. A Taste of Armageddon (Season 1, Episode 23)

"New civilizations" planet stories rarely yielded great episodes, often setting up straw man civilizations for Kirk to knock down, but this one bucks the trend with a story smart enough to rank among the best. Kirk vs. the Computer legendarily has Kirk talk the machine to death, but now and again he goes for the direct approach. Here the computers coldly run simulations and select innocents to die, and Kirk has zero compunction about blasting them, finally forcing the two civilizations to finally attempt to negotiate peace after 500 years of a "war" where death has been made so neat and tidy they see it as a necessary evil rather than something to stop.

Goodies include Scotty's head-butting with Ambassador Fox, Kirk's arguments about war with Anan 7, and Kirk threatening to have the Enterprise rain destruction down on a planet that's not faced a real attack in centuries. The moral? Any war held at arm's length is mere statistics, something the American people had grown accustomed to until television thrust the reality of Vietnam into their living rooms each evening. That's a lesson we must learn over and over again in conflicts where we increasingly use long-range and smart weapons to strike people we never even see. It's a message as relevant today as when it was first aired.

9. The Corbomite Maneuver (Season 1, Episode 10)

Effectively the "third pilot" of "Star Trek," this was the first regular production episode to go before the cameras and it had the luxury of a rehearsal day, a solid director, and a fine script. It even ends with a quintessential "Trek" twist: our implacable foe ends up being an erstwhile friend. By rights, this should've been the first episode to air as it sets up the whole show, but it was nowhere near ready at the premiere , in part due to the sheer number of optical effects in post-production. Dr. McCoy is wonderful from his first appearance, and his camaraderie and professional conflict with Kirk set the stage for their entire relationship.

The weird flagship Fesarius is pure alien goodness, and the Balok puppet is iconic. Memorable business includes Sulu's countdown, Spock's logic and resulting lack of imagination, Scotty's comment about Spock's parents, and McCoy and Kirk's conflict over Bailey. A highlight is the briefing room scene, with its lived-in atmosphere with piles of tapes and empty cups of coffee showing instead of telling us how hard the crew has been working on their predicament. Likewise, the Enterprise feels like a real lived-in ship, with corridors bustling with the crew, something the show would lose as fixed costs increased and studio budgets didn't grow to match . It's one of the 10 best, held back only because it drags in some spots.

8. The Galileo Seven (Season 1, Episode 16)

Albeit loosely inspired by the survivor drama "Five Came Back" (1939), this episode charts its own course as Spock tries and fails to resolve a potentially lethal situation with logic alone. It's rare that adventure shows of the time would depict a lead character failing, but that's just what "The Galileo Seven" does. 

As in "The Corbomite Maneuver," we are again shown that Spock's logic can serve as blinders that prevent him from seeing all the possibilities even as he tells Scott "there are always alternatives." As such, he expects the giant natives to react rationally to a show of force and brings them right down on the party. He's likewise ill-equipped to deal with the emotional frailties of the crew under his command, especially the insolent and insubordinate Lt. Boma, memorably played by Don Marshall, later of "Land of the Giants."

The B-story with Kirk desperately trying to locate the lost shuttle against a ticking clock demonstrates the sorts of no-win scenarios a ship captain must face. The production scores visually for the full-size shuttlecraft, as well as the visual effects depicting it and its sister crafts' departure and return to the Enterprise hangar deck.

7. The Naked Time (Season 1, Episode 4)

The fourth episode aired, "The Naked Time" is the foundational character-building segment of the series, peeling away the surface of Kirk and Spock and revealing a bit of what makes them tick. It's also entertaining as hell, with a slow burn as the crew is at first blissfully ignorant of the inhibition-inhibiting compound brought aboard and then having to deal with the resulting chaos. Sulu's descent into madness is charming, and George Takei was always at his most charismatic when he got to play unhinged. Sadly, neither Uhura nor Rand's secret selves get explored, and poor Chapel's reduced to pining for Spock as her primary character trait for most of the series.

The only weak spot here is that the "science" part of science fiction went out of the airlock. A collapsing planet is as preposterous an idea as the notion that the Enterprise is forced to constantly alter its orbit to study it. But guest crewman Kevin Riley is fun and Scotty gets two great lines here, the first being "I can't change the laws of physics," and the second an example of technobabble that's simple and audience-friendly: "You can't mix matter and antimatter cold!"

6. The Devil in the Dark (Season 1, Episode 25)

The episode is unique for being the only one to open with no sign of the Enterprise or her crew. Effectively a redo of series opener "The Man Trap," this episode succeeds where its predecessor fails not merely because the crew act more rationally but because a narrative twist turns the titular "Devil" into a sympathetic character. The Kirk-Spock dynamic is on fine display here as Spock first wishes to capture the creature alive and Kirk wants it dead, but Spock's feelings for his captain override his desire for scientific knowledge the instant he believes Kirk is in danger. 

Spock urges his captain to "Kill it!" even as Kirk susses out that the creature may be more than a monster. This is the first instance of Spock mind-melding with a wholly alien life form, a gimmick which would be taken to preposterous extremes in "Star Trek: The Motion Picture." Leonard Nimoy's "pain!" emoting is a bit over the top even for the time and keeps the episode out of the top five. Otherwise, he and William Shatner display the chemistry that made the show work even when the scripts let them down. This script does not let them down.

5. Journey to Babel (Season 2, Episode 10)

This world-building episode fires on all cylinders and never misses a beat. If writers then or now needed a model for how to write "Star Trek," this is it, and it's hands down the best episode penned by Dorothy "D.C." Fontana. There's a story conflict as the Enterprise ferries quarrelsome ambassadors and their aides to the titular "Babel" conference over a matter of Federation business. There's an interpersonal conflict between not just Spock and his parents but also between Spock and Kirk and Bones over relinquishing command. 

There's physical conflict as ambassadors brawl, one is murdered, and Kirk is ambushed and wounded. We meet lots of aliens, see a bit of galactic politics, and get a nail-biter of a finish as McCoy tries to perform delicate surgery while Kirk struggles to keep it together amidst attacks by a seemingly unstoppable, unknown ship.

Mark Lenard returns not as a Romulan but as Spock's Vulcan father, Ambassador Sarek, who picks up on Leonard Nimoy's Vulcan portrayal and crafts one uniquely his own. Memorable too is Reggie Nalder, whose burn-scarred face and Austrian accent accentuate his alienness in the role of the blue-skinned Andorian delegate Thelev, and established Andorians as Federation members , who would not be explored on TV for decades. Spock's family drama is a bit conventional for an alien culture, and just a dash more of the Vulcan alienness we got in Ted Sturgeon's "Amok Time" would have made this perfect.

4. The Enemy Within (Season 1, episode 5)

With a script that takes a pinch of "Strange Case of Dr. Jekyll and Mr. Hyde" and adds a dash of "All About Eve," "The Enemy Within" really delivers on the "Star Trek" promise to be an "adult" show by exploring the uncomfortable idea that even the noblest have a dark side, and that our shadow selves are necessary parts of being human. The scenes with Kirk, Spock, and McCoy crackle with intellectual and emotional tension, and Spock finding Kirk's condition so "fascinating" neatly propels the drama while hinting at his own duality. William Shatner's twin performances as the understated compassionate Kirk and the scenery-chewing "imposter" demonstrate his range.

A few missteps are the weird editing, where events happen out of order, such as when Spock states they have an intruder aboard long after they've established the transporter duplicated the dog-thing; Rand being expected to stand up for herself in front of her alleged attacker, Kirk; and the silliness of Spock reporting that the malfunctioning transporter duplicated the thermal heaters beamed down and not thinking to beam down blankets or other insulation to help keep the stranded Sulu and company from becoming human popsicles. Additionally, Spock's closing crack at Rand about the imposter's qualities was and remains cringeworthy.

3. Mirror Mirror (Season 2, Episode 4)

This is the poster child for episodes that manage to become classics despite the premise being as dumb as a box of rocks. Absolutely nothing about the scenario makes a lick of sense. There's a parallel universe where all the same people end up on the same ship despite having vastly different histories and a culture of assassination. The starships in both universes happen to be on the same planet and beaming the same four people at the exact same time, and our parallel-universe leaping characters and their barbaric counterparts somehow switch wardrobes — and presumably underwear — mid-transporter beam.

What saves it is the sheer entertainment value of this gaudier imperial Starfleet and the skewed versions of familiar regulars inhabiting it. Evil Sulu's a sweaty seducer, mirror Chekov is a back-stabbing opportunist, and bearded Spock was a meme before we knew we had memes. The best Uhura performance can be found here, and Nichelle Nichols should be remembered for this over that overrated and involuntary interracial kiss. The only thing that could have made it better was had Yeoman Rand been brought back as "the Captain's Woman." The big speech to mirror Spock about the illogic of waste is Kirk at his Kirkiest, and that's the perfect capper on a perfectly entertaining classic that ranks right near the top.

2. Amok Time (Season 2, Episode 1)

The Vulcan episode to rule them all is one of those rare world-building episodes of the original series, except here the strange new world is Spock's home planet. Vulcan civilization is memorably introduced in a most unexpected way by demonstrating that the cooly logical Spock is anything but when it's time to swim upstream and spawn, whereas his mate-to-be, T'Pring , employs the logic Spock adores in order to escape her obligations to him and make her own choices. 

Everything about the scenes on Vulcan works splendidly, from matriarch T'Pau's officiating and T'Pring's challenge to the big Kirk-Spock battle. Okay, and the wonderful and memorable OTT music is the icing on the cake. The first half on the Enterprise has some nice comic moments as well as some solid Kirk-Spock-McCoy interaction, but, as with many episodes where a mystery is involved, the tension of the first half doesn't play quite as well on repeat viewings. 

Fortunately, the drama and conflict on Vulcan are top-notch and hold up. The punchline in sickbay is a classic, because the bigger the dramatic tension, the bigger the comic release, and, given all the action on the planet, the funny tag feels totally earned for a change.

1. The City on the Edge of Forever (Season 1, Episode 28)

No surprise here, as it tops a great many lists, but "City" excels not only because the core drama is compelling but because of the care with which it was put together. The most expensive regular production episode of the series , all the money is up there on the screen, from the period costumes to the backlot shooting, new sets, stock footage, and the flashing Guardian time donut. William Shatner, Leonard Nimoy, and DeForest Kelley are all in fine form here. Guest star Joan Collins isn't great but she's fine.

Story-wise, the fish-out-of-water situation, the incredibly high stakes, and the crushing inevitable tragedy make this the exemplary segment. Even gutted by ham-fisted staff rewrites by the "Trek" staff (in my opinion), Harlan Ellison's core story premise remains moving in spite of the on-the-nose sermon by Edith, the racist joke at Spock's expense, and the complete absence of the tragic Trooper character on whom the irony of who amongst us "matters" hinged. Kirk's episode-closing "Let's get the hell out of here" was not any kind of TV first, but it was the perfect minimalist button that the story needed. What more was there to say?

The 10 best Star Trek: The Original Series episodes of all time

Boldly go where no binge-watcher has gone before.

Star Trek took televised sci-fi mainstream.

That isn’t hyperbole. It’s historical fact. While shows like The Outer Limits, The Twilight Zone and Lost in Space preceded Star Trek , none of those shows broke through and created a fandom as widespread and enduring as the original adventures of the starship Enterprise .

Since 2011, Netflix has made Star Trek: The Original Series available for streaming in the US. But that era will end on September 30, 2021.

If you’re a sci-fi fan, or even a Star Trek fan who has never really delved into The Original Series , this is your last chance to watch the show on Netflix. Out of the 79 installments in TOS , which episodes should you actually binge?

To get a good sense of what The Original Series is actually like, here are 10 essential episodes. These might not be everyone’s “best” episodes of TOS , but if you watch these ones in this exact order, it’s the fastest hack to get at what all the Trekkie fuss is about. Only mild spoilers ahead for Star Trek: The Original Series .

Kirk and Bones get ready to boldly go.

“The Corbomite Maneuver”

On Netflix: Season 1, Episode 11

Netflix wants you to start watching TOS with “The Cage.” Resist! This is not a great way to start the series.

“The Cage” was an unaired pilot for Star Trek , later retconned into a flashback within the episode “The Menagerie.” While some fans may argue you’ll want to watch “The Cage” to get the backstory of the series, starting with “The Cage” will just confuse you as to why people like this show. Tonally, it’s nothing like the rest of TOS . And the cast, other than Leonard Nimoy as Spock, is totally different.

For this reason, start with “The Corbomite Maneuver.” Why? Well, even though it was the 10th episode ever aired, this episode was the first regular episode ever filmed. Unlike the two pilot episodes (“The Cage” and “Where No Man Has Gone Before”) the actors in this episode are, for the most part, in the roles we know and love them for. The episode begins with Spock saying something is “fascinating” and then, after the title credits, Kirk is walking around without his shirt. The vibe of this episode is amazing, the tension is excellently handled, and the final twist is utterly absurd. This is what classic Trek feels like.

The earliest instance of people on Star Trek watching Star Trek.

“The Menagerie Parts 1 and 2”

On Netflix: Season Episodes 12 and 13.

Here’s where you can get your dose of “The Cage” and fully understand Spock’s relationship to his captain before Kirk: Captain Christopher Pike. Although this is a two-part episode, the time pretty much flies by.

Because Strange New Worlds comes out in 2022, this story is essential to understanding where Spock was before TOS , not to mention who the hell Number One is. The way this episode frames “The Cage” in the context of the regular series is also super-smart; basically, the regular characters watch parts of another episode of Star Trek.

Also, across the franchise, any Star Trek episode that involves a courtroom drama of some kind is usually a winner. Weirdly, combined with “Amok Time,” this episode might lead you to believe that Spock tries to hijack the Enterprise all the time. He doesn’t. But it sure seems that way.

Spock being awesome in the phaser control room.

“Balance of Terror”

On Netflix: Season 1, Episode 15

Everyone loves to talk about the Klingons in Star Trek , but before the Klingons were ever introduced, the first and best big Trek baddies were the Romulans. As episodes of TOS go, “Balance of Terror” is tightly plotted and emotionally affecting.

Because long-time fans take this episode for granted, we tend to forget about the innovative reveal of the Romulans in general. If you don’t know why the reveal about the Romulans is huge, I won’t spoil it here. Let’s just say it was very gutsy for TOS to create an evil empire that had very close ties to one of its greatest heroes. Also, the slow-burn spaceship battles absolutely slap.

Don’t mess with Kirk.

“A Taste of Armageddon”

On Netflix: Season 1, Episode 24

This is a bit of a sleeper episode of TOS , and it’s massively underrated. Almost every good thing about classic Star Trek happens in this episode. Revealing the premise is a bit of a cheat, but let’s just say the plot involved Kirk and Spock fighting against a culture totally reliant on algorithms and automation.

The twist in this episode is all about what things this particular culture has automated. And when Kirk and Spock figure the culture’s secret, the space sh*t hits the fan big time.

Kirk and Spock don’t always fight to the death, but when they do, they do it in style.

“Amok Time”

On Netflix: Season 2, Episode 1

A classic. You already probably know that Spock and Kirk are supposed to fight to the death in this one. But if you don't know why, exactly, this episode will blow you away. This is the first time we get “live long and prosper,” and a ton of background on the planet Vulcan. From Discovery to the reboot movies , a ton of Trek flows from this single episode.

There’s a lot of ass-kicking in this episode. You’ve been warned! It may be too awesome to handle!

“Mirror, Mirror”

On Netflix: Season 2, Episode 4

In The Original Series , this one episode was the only visit to the evil universe in which Starfleet is basically a conquering force, and Spock has a little goatee. The Mirror Universe returned big time in both Deep Space Nine and Discovery , and all the rules of that hyperbolic dimension were established here. This episode is over-the-top and full of heart, two elements that made TOS the memorable and charmingly upbeat franchise launcher it was. But seriously, this episode is very over the top. Be ready.

The Enterprise versus the Star Trek version of the Death Star.

“The Doomsday Machine”

On Netflix: Season 2, Episode 6

As the title suggests, the Enterprise faces off against a giant automated weapon even more powerful than the Death Star! When this episode first aired in 1967, the titular “Doomsday Machine” didn’t look very cool.

However, the remastered version of this episode (which is the Netflix version) looks fantastic. Plus, in this episode, you get another Federation starship, the USS Constellation ! Finally, although The Wrath of Khan calcified the franchise’s obsession with Moby Dick , that tradition started right here.

Uhura meets the first tribble. Watch out!

“The Trouble With Tribbles”

On Netflix: Season 2, Episode 15

You’ve heard of this one. There are these fuzzy little balls called tribbles, and they’re all over the place. Although the kitsch in this episode is cranked all the way up to eleven, the episode totally holds up. Come for the tribbles, but stay for Kirk’s awesome cutdowns throughout the entire episode. A lighthearted romp that is a classic Trek outing for a reason. Also, the Klingons are silly AF in this one.

Spock and the Romulans.

“The Enterprise Incident”

On Netflix: Season 3, Episode 2

Season 3 of TOS is often derided by hardcore fans, and sometimes for very good reasons. Overall, the batting average of TOS Season 3 is fairly low compared to the previous two seasons.

However, the excellent espionage episode “The Enterprise Incident” is not only super-fun but also a semi-direct sequel to “Balance of Terror.” This list is biased in favor of the Romulans over the Klingons, and this is one Romulan episode that delivers.

Kirk and Spock rock the best spacesuits in all of Star Trek.

“The Tholian Web”

On Netflix: Season 3, Episode 9

Perhaps not the most tightly written episode of TOS , “The Tholian Web” is beautiful from a visual standpoint. From the zany all-silver spacesuits to the concept of tiny ships weaving an energy web around the Enterprise , to a certain character haunting the crew members as a space ghost, this episode has it all.

Don’t think about the plot too much. Just embrace the gonzo visual sci-fi aesthetic of classic Trek, and you’ll have a great time. As a bonus, “The Tholian Web” later became a backdoor canon Rosetta Stone for two episodes of Enterprise and nearly half of Discovery Season 1.

There’s obviously a lot more TOS to love and enjoy, so if you are curious about other great episodes after you binge these ten, think about hitting up: “The Devil in the Dark,” “The City on the Edge of Forever,” “The Naked Time,” “Shore Leave,” “Arena,” “Journey to Babel,” “A Piece of the Action,” “A Private Little War,” “The Galileo Seven,” “For the World Is Hollow and I Have Touched the Sky,” and “ All Our Yesterdays.”

Star Trek: The Original Series is streaming now on Netflix and leaves on September 30, 2021. It also streams on Paramount+ from now until presumably the heat death of the known universe.

This article was originally published on Sep. 18, 2021

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BEST STAR TREK EPISODES (The Original Series)

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1. Star Trek (1966–1969) Episode: Balance of Terror (1966)

TV-PG | 50 min | Action, Adventure, Sci-Fi

The Enterprise must decide on its response when a Romulan ship makes a destructively hostile armed probe of Federation territory.

Director: Vincent McEveety | Stars: William Shatner , Leonard Nimoy , Mark Lenard , Paul Comi

Votes: 5,699

2. Star Trek (1966–1969) Episode: The Doomsday Machine (1967)

The USS Enterprise encounters the wrecked USS Constellation and its distraught commodore who's determined to stop the giant planet-destroying robot ship that killed his crew.

Director: Marc Daniels | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , William Windom

Votes: 4,502

3. Star Trek (1966–1969) Episode: The Immunity Syndrome (1968)

The Enterprise encounters a gigantic energy draining space organism that threatens the galaxy.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan

Votes: 3,295

4. Star Trek (1966–1969) Episode: The Corbomite Maneuver (1966)

After the Enterprise is forced to destroy a dangerous marker buoy, a gigantic alien ship arrives to capture and condemn the crew as trespassers.

Director: Joseph Sargent | Stars: William Shatner , Leonard Nimoy , Anthony D. Call , Clint Howard

Votes: 4,884

5. Star Trek (1966–1969) Episode: The Devil in the Dark (1967)

The Enterprise is sent to a mining colony that is being terrorized by a mysterious monster, only to find that the situation is not that simple.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Ken Lynch

Votes: 4,299

6. Star Trek (1966–1969) Episode: The Changeling (1967)

A powerful artificially intelligent Earth probe, with a murderously twisted imperative, comes aboard the Enterprise and mistakes Capt. Kirk for its creator.

Director: Marc Daniels | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan

Votes: 3,666

7. Star Trek (1966–1969) Episode: The Ultimate Computer (1968)

Kirk and a sub-skeleton crew are ordered to test out an advanced artificially intelligent control system - the M-5 Multitronic system, which could potentially render them all redundant.

Director: John Meredyth Lucas | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , William Marshall

Votes: 3,479

8. Star Trek (1966–1969) Episode: Spectre of the Gun (1968)

TV-PG | 51 min | Action, Adventure, Sci-Fi

As punishment for ignoring their warning and trespassing on their planet, the Melkot condemn Capt. Kirk and his landing party to the losing side of a surreal recreation of the 1881 historic gunfight at the OK Corral.

Director: Vincent McEveety | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Ron Soble

Votes: 3,376

9. Star Trek (1966–1969) Episode: Metamorphosis (1967)

While returning to the Enterprise aboard the shuttlecraft, Kirk, Spock, McCoy and a seriously ill Federation diplomat find themselves kidnapped by an energized cloud.

Director: Ralph Senensky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Glenn Corbett

Votes: 3,625

10. Star Trek (1966–1969) Episode: The Tholian Web (1968)

With Capt. Kirk and the derelict USS Defiant apparently lost, the Enterprise grapples with an insanity causing plague and an attack by the Tholians.

Directors: Herb Wallerstein , Ralph Senensky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan

Votes: 3,425

11. Star Trek (1966–1969) Episode: The City on the Edge of Forever (1967)

When a temporarily insane Dr. McCoy accidentally changes history and destroys his time, Kirk and Spock follow him to prevent the disaster, but the price to do so is high.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , Joan Collins , DeForest Kelley

Votes: 6,578

12. Star Trek (1966–1969) Episode: Mirror, Mirror (1967)

A transporter accident places Captain Kirk's landing party in an alternate universe, where the Enterprise is in the service of a barbarically brutal empire.

Director: Marc Daniels | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , BarBara Luna

Votes: 5,142

13. Star Trek (1966–1969) Episode: The Enemy Within (1966)

A transporter malfunction splits Captain Kirk into two halves: one meek and indecisive, the other violent and ill tempered. The remaining crew members stranded on the planet cannot be beamed up to the ship until a problem is fixed.

Director: Leo Penn | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Grace Lee Whitney

Votes: 4,923

14. Star Trek (1966–1969) Episode: The Galileo Seven (1967)

The Galileo, under Spock's command, crash-lands on a hostile planet. As the Enterprise races against time to find the shuttlecraft, Spock's strictly logical leadership clashes with the fear and resentment of his crew.

Director: Robert Gist | Stars: William Shatner , Leonard Nimoy , Don Marshall , DeForest Kelley

Votes: 4,240

15. Star Trek (1966–1969) Episode: Return to Tomorrow (1968)

The Enterprise is guided to a distant, long-dead world where survivors of an extremely ancient race - existing only as disembodied energy - desiring the bodies of Kirk, Spock and astro-biologist Ann Mulhall so that they may live again.

Director: Ralph Senensky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Diana Muldaur

Votes: 3,309

16. Star Trek (1966–1969) Episode: Assignment: Earth (1968)

While back in time observing Earth in 1968, the Enterprise crew encounters the mysterious Gary Seven who has his own agenda on the planet.

Director: Marc Daniels | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Robert Lansing

Votes: 3,703

17. Star Trek (1966–1969) Episode: All Our Yesterdays (1969)

When Kirk, Spock and McCoy investigate the disappearance of a doomed planet's population, they find themselves trapped in different periods of that world's past.

Director: Marvin J. Chomsky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Mariette Hartley

Votes: 3,395

18. Star Trek (1966–1969) Episode: A Taste of Armageddon (1967)

Kirk and Spock must save their ship's crew when they are all declared killed in action in a bizarre computer simulated war where the actual deaths must nevertheless occur.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , David Opatoshu , Gene Lyons

Votes: 4,194

19. Star Trek (1966–1969) Episode: By Any Other Name (1968)

Galactic alien scouts capture the Enterprise for a return voyage and a prelude to invasion. Kirk's one advantage - they're not used to their adopted human form.

Director: Marc Daniels | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Warren Stevens

Votes: 3,389

20. Star Trek (1966–1969) Episode: Obsession (1967)

Capt. Kirk obsessively hunts for a mysterious cloud creature he encountered in his youth.

Director: Ralph Senensky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Stephen Brooks

Votes: 3,288

21. Star Trek (1966–1969) Episode: For the World Is Hollow and I Have Touched the Sky (1968)

The Enterprise discovers an apparent asteroid that is on a collision course with a planet is actually an ancient populated generation ship.

Director: Anton Leader | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Katherine Woodville

Votes: 3,122

22. Star Trek (1966–1969) Episode: Day of the Dove (1968)

Both humans and Klingons have been lured to a planet by a formless entity that feeds on hatred and has set about to fashion them into a permanent food supply for itself.

Director: Marvin J. Chomsky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Michael Ansara

Votes: 3,367

23. Star Trek (1966–1969) Episode: The Menagerie: Part I (1966)

Spock kidnaps the disabled Capt. Pike, hijacks the Enterprise, and then surrenders for court martial.

Directors: Marc Daniels , Robert Butler | Stars: William Shatner , Leonard Nimoy , Jeffrey Hunter , Susan Oliver

Votes: 4,863

24. Star Trek (1966–1969) Episode: The Menagerie: Part II (1966)

At Spock's court martial, he explains himself with mysterious footage about when Capt. Pike was kidnapped by powerful illusion casting aliens.

Directors: Robert Butler , Marc Daniels | Stars: William Shatner , Leonard Nimoy , Jeffrey Hunter , Susan Oliver

Votes: 4,659

25. Star Trek (1966–1969) Episode: Wink of an Eye (1968)

A group of aliens who exist in a state of incredible acceleration invade the Enterprise and abduct Capt. Kirk.

Director: Jud Taylor | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , Kathie Browne

Votes: 3,161

26. Star Trek (1966–1969) Episode: The Trouble with Tribbles (1967)

To protect a space station with a vital grain shipment, Kirk must deal with Federation bureaucrats, a Klingon battle cruiser and a peddler who sells furry, purring, hungry little creatures as pets.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , William Schallert

Votes: 4,932

27. Star Trek (1966–1969) Episode: The Return of the Archons (1967)

Seeking the answer to a century-old mystery, Kirk and crew encounter a vacantly peaceful society under a 6000-year autocratic rule that kills all those it can't absorb.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , Harry Townes , Torin Thatcher

Votes: 3,868

28. Star Trek (1966–1969) Episode: Operation -- Annihilate! (1967)

The Enterprise crew attempts to stop a plague of amoeba-like creatures from possessing human hosts and spreading throughout the galaxy.

Director: Herschel Daugherty | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan

Votes: 3,688

29. Star Trek (1966–1969) Episode: What Are Little Girls Made Of? (1966)

Nurse Chapel is reunited with her fiancé; but his new obsession leads him to make an android duplicate of Captain Kirk.

Director: James Goldstone | Stars: William Shatner , Leonard Nimoy , Michael Strong , Sherry Jackson

Votes: 4,644

30. Star Trek (1966–1969) Episode: Arena (1967)

For bringing hostility into their solar system, a superior alien race brings Captain Kirk into mortal combat against the reptilian captain of an alien ship he was pursuing.

Director: Joseph Pevney | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , George Takei

Votes: 4,512

31. Star Trek (1966–1969) Episode: Errand of Mercy (1967)

With a war with Klingons raging, Kirk and Spock attempt to resist an occupation of a planet with incomprehensibly placid natives.

Director: John Newland | Stars: William Shatner , Leonard Nimoy , John Abbott , John Colicos

Votes: 4,052

32. Star Trek (1966–1969) Episode: Bread and Circuses (1968)

The Enterprise crew investigates the disappearance of a ship's crew on a planet that is a modern version of the Roman Empire.

Director: Ralph Senensky | Stars: William Shatner , Leonard Nimoy , DeForest Kelley , William Smithers

Votes: 3,278

33. Star Trek (1966–1969) Episode: The Alternative Factor (1967)

Existence itself comes under threat from a man's power-struggle with his alternate self, with the Enterprise's strained dilithium crystals presenting his key to a final solution.

Director: Gerd Oswald | Stars: William Shatner , Leonard Nimoy , Robert Brown , DeForest Kelley

Votes: 3,883

34. Star Trek (1966–1969) Episode: Charlie X (1966)

Captain Kirk must learn the limits to the power of a 17-year-old boy with the psionic ability to create anything and destroy anyone.

Director: Lawrence Dobkin | Stars: William Shatner , Leonard Nimoy , Robert Walker Jr. , DeForest Kelley

Votes: 5,484

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The best Star Trek episodes every Trekkie should watch

Boldly go where... we've gone before with the best Star Trek episodes of all time

On March 11, 1964, Gene Roddenberry wrote “Star Trek is…” onto a blank piece of paper. Fifty years plus later, the fan-favourite show continues to intrigue and innovative audiences the world over, and now with the excellent Star Trek Discovery reigniting our love for the sci-fi series, never have our expectations been higher… nor our craving for all things Trek greater.

With Discovery returning to our screens this week after it's mid-season break, I've ranked my favourite 23 episodes. Sure, some tough decisions had to be made (and of course, there have been some absolute stinkers that had no chance of making the shortlist!), but given the rich plots and stories from across fifty years of television, there's certainly plenty to choose from. No doubt there will be lots of 'discussion' about which episodes did and didn't make it in, so let me know your favourites in the comments below.

23. Family (The Next Generation)

Family is a defiantly low-key, but quietly radical, Star Trek story. Set in the aftermath of The Best of Both Worlds - which saw Picard forcibly transformed into one of the Borg - our favourite Earl Grey-loving captain returns to his ancestral home and comes to blows with his surly brother. Boring? Not a bit of it. This is Trek as a character drama, and an intelligent one at that. It's lack of plot only serves to emphasize how attached we have become to Jean Luc over the last few years, and how traumatised he has been by his recent fight.

22. Broken Bow (Enterprise)

Enterprise struggled to find its identity over the years. It had some great episodes and a lot of confused fluff, but there's no denying the confidence and strut of its pilot. Broken Bow sees the launching of the first Warp 5 spaceship and the Enterprise NX-01, and therefore the true beginnings of Starfleet. Captain Archer and his crew must take an injured Klingon back to Kronos, but get drawn into a mysterious time war that would go on to become an essential (if poorly wrapped-up) element of the series.

21. This Side of Paradise (Star Trek)

Lampooned in the years that followed, this is the famous "hippy" episode, where Spock comes under the influence of some local spores and falls in love with lovely Leila. Here's the thing, though; there's loads more to this episode than just the sight of Leonard Nimoy playing a very different sort of Spock and a drug metaphor. The love story is sensitively handled, and it's conclusion very affecting. There's some great dialogue (McCoy bellowing "Hiya, Jimmy boy! I've taken care of everything. All y'all gotta do is relax!" is a treat) and writer DC Fontana hones in on Spock's loneliness when he returns to "normal". And what could be more perfectly '60s than Star Trek meeting flower power?

20. Caretaker (Voyager)

It's safe to say that Voyager doesn't have the best rep among fans. New Star Trek had become such a part of the TV furniture by then that the shock of the new had worn off, and the franchise was badly in need of new ideas. That's not to say that there weren't good episodes, however, including the excellent pilot. Caretaker quickly sets up an intriguing status quo where Starfleet loyalists and a faction of rebel colonists called The Maquis are forced to work together when they find themselves trapped on the other side of the galaxy. Kate Mulgrew impresses as Captain Janeway, and the ship's medical hologram, played by Robert Picardo, is hilarious.

19. Magic to Make the Sanest Man Go Mad (Discovery)

Harry Mudd returns in this celebrated episode, using a crystal to lock the USS Discovery crew in time as they slip on their party clothes to unwind a little. In his efforts to keep the crew occupied as he explores the starship, looking for secrets and details to sell to the Klingons, Mudd's time crystal dooms the crew to die over and over, until Stamets - who exists outside of the loop - can convince Burnham of Mudd's plans and put a stop to them. It's a perfect, self-contained episode that explores not just time loops, but broader themes of love, loss, and greed. It also forever locks The Bee Gees as Trek canon. 

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18. Year of Hell, parts 1 & 2 (Voyager)

This one lives up to its name. This season four two-parter focusses on the Voyager as it is caught up in a running battle with the Krenim race. Over the course of months we begin to see the ship worn down, and its crew put through a string of disasters. It's almost - almost - Voyager's equivalent of The Best of Both Worlds with its dark tone and high consequences. Alas, it hits the reset button at the end of the story.

17. Space Seed (Star Trek)

Khaaaaaan! What more is there to say? This is the episode that introduced Roberto Montalban's devilish genetic superman, the man who would prove to be Kirk and company's greatest foe in the second Trek movie. It's more than just a dry run for that movie, though; there's a real sense of the crew being thoroughly tested by their new enemy. Although the episode ends with Kirk giving Khan a second chance, as we later discover, the world of Ceti Alpha V proves to be rather harsher than anticipated. That will come back to bite you, Kirk...

16. Arena (Star Trek)

AKA the one where Kirk is forced to wrestle a lizard. Arena is a truly iconic episode, homaged on Wayne's World and even JJ Abrams' 2009 Star Trek reboot. Vasquez Rocks in California are a stunning backdrop, a world away from the show's studio sets, and the Gorn captain is a fantastic adversary. What really makes it classic Trek however is the resolution, which relies on compassion and mercy, rather than brute force.

15. All Good Things... (The Next Generation)

Wrapping up a series as beloved as The Next Generation is a seriously tall order, but All Good Things... manages it with aplomb. It cleverly ties back to the very first episode, with John de Lancie's Q presenting the crew with another puzzle to solve, this time one that takes place in multiple time zones. The episode has an appropriate sense of closure, but with the movie series ahead of the Next Gen crew, this wasn't so much a goodbye as as a graduation.

14. The Vulcan Hello (Discovery)

The first series not to pivot the story around the captain, all eyes were on newbie Discovery and its opening episode, and it did not disappoint. Occurring a decade before the events of the original series, The Vulcan Hello introduced us to First Officer Michael Burnham - a human raised in a Vulcan world - and the Federation-Klingon Cold War. It showed us that Burnham's upbringing had afforded her with an unique insight... and she was not against bending the rules and going against orders for the greater good. It was beautifully followed up by its sequel, Battle at the Binary Stars.

13. Battle at the Binary Stars (Discovery)

Part two of Discovery's premiere, Battle at the Binary Stars, marks the first time the Federation and Klingons engaged each other in war (which was on stardate 1207.3, fact fans). Though the two powers had skirted around each other before, this was the first time there was open hostility, something Burnham was trying to avoid when she overpowered Georgiou in an attempt to open fire, unprovoked, on the Klingon vessel. It's a key event in the timeline of Star Trek, and adds great context to the Federation's on-going issues with Klingons that are still yet to come...

12. Trials And Tribble-ations (Deep Space Nine)

Designed to celebrate Star Trek's 30 anniversary, this glorious episode steps away from Deep Space Nine's traditional gloom and doom by flinging the cast back in time and into the original series episode The Trouble With Tribbles. The modern day cast appear to interact with the original icons in a hilarious, nostalgic, and brilliantly realised tribute to the show's origins.

11. Where No Man Has Gone Before (Star Trek)

Okay, so it's technically not the real pilot (that's actually The Cage which was rejected by NBC), but it marks Kirk's first appearance, and therefore the start of Star Trek as we know it. The Enterprise encounters the SS Valiant, a starship lost 200 years previously. Kirk's friend Gary Mitchell and the ship's psychiatrist, Dr. Elizabeth Dehner, are rendered unconscious as they fly through a magnetic storm. But when they awake, begin to demonstrate peculiar psychic powers. It looks a bit ropier than the main show and not all of the regular cast are in place yet, but it does show just how much of Star Trek was in place right from the start.

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Will Salmon is the Comics Editor for GamesRadar/Newsarama. He has been writing about comics, film, TV, and music for more than 15 years, which is quite a long time if you stop and think about it. At Future he has previously launched scary movie magazine Horrorville, relaunched Comic Heroes, and has written for every issue of SFX magazine for over a decade. He sometimes feels very old, like Guy Pearce in Prometheus. His music writing has appeared in The Quietus, MOJO, Electronic Sound, Clash, and loads of other places and he runs the micro-label Modern Aviation, which puts out experimental music on cassette tape.

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'Make it so': Star Trek: The Next Generation's 25 best episodes, ranked

These are the best adventures of Captain Picard's  TNG  crew.

No one expected Star Trek to last longer than the original series’ first three seasons, let alone 55 years. 

Even by 1960s standards, the classic show suffered from low-budget sets and, at times, cheesy effects. But what it lacked in spectacle it made up for with ideas; a thematically-rich exploration of heady sci-fi concepts bolstered by occasional space-based action and some of the finest TV characters ever assembled. Trek ’s legacy would endure and spawn 13 feature films and several series, most notably Star Trek: The Next Generation , which is as popular now (or more) than it has ever been, thanks to streaming. In 2021,  TNG  celebrate some significant milestones: The 30th anniversary of the Season 5 episode "Disaster,"  Trek 's take on disaster movies like  The Poseidon Adventure , the 30th of "Unification, Parts I and II, which marked Mr. Spock's return to television prior to the theatrical release of 1991's  Star Trek VI: The Undiscovered Country , and  Star Trek: First Contact  recently turned 25. 

With everyone coming up  Star Trek: The Next Generation  lately, as well as the franchise itself celebrating its 55th anniversary this year, SYFY WIRE scrolled through our databanks to rank and file the 25 greatest episodes of  TNG . 

25. “Q Who?” (Season 2)

The Borg have never been more scary than they are in “Q Who?”, their first appearance in Star Trek .

When Q is denied a spot amongst Picard’s crew, he punishes the captain’s perceived short-sightedness by snapping his fingers and sending the Enterprise to the unexplored reaches of the Delta Quadrant. There, Picard encounters — and barely escapes — the Borg and their relentless pursuit of perfection by means of assimilation. The moment their cube vessel cuts out a section of the D’s saucer as easily as one would carve a roast, the Borg instantly shot past the Klingons as Star Trek ’s most lethal adversary. Our introduction to the Borg is both bleak and dark, which gives the episode a slow burn, almost haunted house movie-type feel thanks to future X-Files director Rob Bowman’s dread-filled visual style. For the first time on Star Trek , you don’t know how or if the crew will get out of this one. The tension therein makes for one hell of an episode. 

24. “The Next Phase” (Season 5)

“The Next Phase” is further proof that, when it comes to delivering high-concept entertainment, no Trek show did it better than The Next Generation .  

With a plotline rich enough to sustain an entire feature, “Next Phase” pairs the conflict-heavy Ensign Ro (Michelle Forbes) with LeVar Burton’s Geordi LaForge on a mission to free themselves from being phased out of reality before Romulans destroy the Enterprise. Forbes and Burton’s committed performances help ground the out-there premise as the sci-fi complications build to a race-against-time conclusion that is so satisfying, you might catch yourself applauding in approval. 

23. “Ensign Ro” (Season 5)

Season Five’s “Ensign Ro” had the unenviable task of introducing the episode’s titular recurring character as means to tee up the Star Trek: Deep Space Nine spinoff. While more plot heavy than usual TNG episodes, Michael Piller’s teleplay delicately balances out the exposition with essential character development scenes between the infamous Ro Laren and her new captain, Picard.

When we first meet the Bajoran Ro, everything about her says “stay away.” Her rebellious Starfleet record precedes her when she first boards Enterprise, which leads to instant friction between her and Riker as Picard recruits Ro for a mission that concerns her people and their enemy, a Nazi-like occupational force known as the Cardassians. Ro quickly became a fan-favorite, thanks to Forbes’ sympathetic and charming performance in what would become a load-bearing episode for the franchise’s expansion in the ‘90s. 

22. “Brothers” (Season 4)

This Season 4 entry fleshes out Data’s backstory with a one-man show for Brent Spiner as he plays three different characters: Data, his very old creator, Dr. Noonien Soong, and Data’s very evil brother, Lore. 

After Data inexplicably orchestrates a fake disaster aboard the Enterprise and takes control of the ship’s computer, he confronts both the father he thought was long lost and the brother he can’t seem to lose. Soong wants to give Data an emotion chip, to finish what he started before he dies, just as Data’s family reunion jeopardizes the health of a young boy under Dr. Crusher’s care. If Data doesn’t relinquish control of the Enterprise, this kid will die and his brother will suffer from a lifelong case of survivor’s guilt. Looking past the fact that “Brothers” confusingly avoids dealing with any serious questions surrounding Data’s selfish and potentially deadly actions, the episode serves as an extended Emmy reel for Spiner. He effortlessly dons old age makeup and switches between three generations of Data’s family line in what is a definitive moment in the android’s arc. 

21. “Deja Q” (Season 3)

The second best of Q’s visits to the Enterprise, “Deja Q” is a brilliant elevator pitch — what if Q lost his powers — executed to its richest and most dramatically satisfying potential. Stripping Q of his omnipotence gives the mischievous a newfound sense of vulnerability and humility, one he only previously experienced when observing the subjects of his torments. While Q’s appreciation for what it means to be human is brief, it gives John de Lancie interesting opportunities to invest his iconic baddie with more nuance as Q goes from selfless to selfish in this entertaining (and very meme-friendly) outting. 

20. “Reunion” (Season 4)

Worf-centric episodes of TNG like “Reunion” or “Sins of the Father” are to Star Trek what the last two Captain America movies are to Marvel: World-building game changers. “Reunion” pushes major plotlines whose consequences will eventually ripple effect throughout the next three decades of Star Trek , as Worf’s personal vendetta against his rival, the Duras family, brings more intrigue to the Enterprise and tragedy to our favorite Klingon. 

It also pushes Worf into a relationship with his estranged son, Alexander, as the two must learn to live together when a conspiracy that threatens to tear the Klingon Empire apart results in the death of Alexander’s mom and Worf’s over, K'Ehleyr (the scary-talented Suzie Plakson). The mystery plot here clicks into place like safe tumblers, but “Reunion” truly excels in the moments spent with Worf as his obligations as a Starfleet officer get in the way of his code as a Klingon warrior. Especially when, during one of Trek ’s darkest moments, Worf exercises his right to avenge his one true love by straight-up murdering her dishonorable killer. 

19. “The Drumhead” (Season 5)

As bottle episodes go, they don’t get much better or more powerful than “The Drumhead.” 

It’s The Crucible on the Enterprise as Picard spars with one of the Federation’s legendary legal minds and investigators when she suspects there is a Romulan conspiracy taking root on the flagship. The circumstances surrounding her suspicions achieve Red Scare-levels of paranoia as TNG puts McCarthyism through a revealing and unyielding sci-fi lens to tell a very timely story of how far people will go to find the truth — even if it means fabricating a version of it. 

18. “Lower Decks” (Season 7)

Before the comedic adventures of the animated Star Trek: Lower Decks , Star Trek ’s first attempt to explore the lives of the rank-and-file officers aboard a starship occurred in “Lower Decks,” one of the few standout episodes from the underwhelming Season 7. 

“Lower Decks” devotes most of its screentime to a small group of pals who aspire to be on the Enterprise bridge or among the senior staff’s away missions. They soon end up in “be-careful-what-you-wish-for” territory when Picard plucks one of the young officers, the Bajoran Ensign Sito (Shannon Fill), to help him execute a dangerous mission involving the Cardassians. “Lower Decks” acts as a pseudo-sequel of sorts to “The First Duty,” where Picard first encountered Sito during a court martial that tarnished the then-cadet’s career before it started. Her chance at redemption via Picard’s mentorship gives the episode its beating heart, which ultimately breaks ours in the final moments when this earnest officer we’ve been rooting for becomes another casualty under Picard’s command. With this final dramatic twist, “Lower Decks” goes from a welcomed departure from TNG ’s usual story template to one of the show’s most effective episodes. 

17. “The First Duty” (Season 5)

Wesley Crusher continues to give Picard more headaches than anyone is worth, but at least this time it results in a standout episode of Trek . 

Ron Moore’s attempt to do A Few Good Men , Star Tre k -style, centers on Crusher and his fellow cadets. On the eve of their graduation from Starfleet Academy, they find themselves in the middle of a tribunal that intends to get to the truth behind why their friend and fellow cadet, Josh, died during a flight exercise. The lies Wesley and his friends tell to escape justice only puts them under more scrutiny when Picard goes digging around the shady circumstances surrounding Josh’s death. That search yields a show-stopping scene between Picard and Wesley, with one hell of a monologue that still gives us chills. “The First Duty” adds some much needed depth and ethical greys to Wesley’s squeaky-clean image, while also affording TNG the rare chance to challenge its “perfect” utopia by proving that even the best of us can succumb to our lesser angels. 

16. “The Defector” (Season 3)

“The Defector” is another exceptional episode from (shocker) writer Ron Moore, which puts a Romulan defector front and center with tragic consequences.

This defector, who Picard struggles to believe is just some low-level officer, risks never seeing his family again in an effort to save his people and Earth’s from what appears to be another costly war brewing between the two adversaries. In the course of vetting the defector’s statements, Picard finds more questions than answers. That investigation comes with one hell of a gut punch: Eventually, the Romulan officer realizes his people betrayed him . They used him as bait, leaking somewhat false information as a way to test his loyalty to the Empire and gleam intelligence off Starfleet’s response to their partial ruse. “The Defector” is a powerful tale of one man’s journey from brave hero to duped traitor, with a mystery plot that keeps audiences at the edge of their seats as the final scenes send them reaching for some tissues. 

15. “Disaster” (Season 5)

Designed as an homage to classic disaster movies like The Poseidon Adventure , Ron Moore’s underrated “Disaster” gives the Enterprise the Irwin Allen treatment when the starship is crippled after a collision with two quantum filaments (think space potholes). With the ship powerless and adrift, “Disaster” splits up the crew and mines their individual crises for maximum tension by putting these characters outside their comfort zone or into conflict-rich pairings. For example, an injured Picard is forced to help and work with people he normally can’t stand, children, while Counsellor Troi finds herself both in command and way over her head as her inexperience clashes with that of the better-trained Ensign Ro. “Disaster” is the rare Trek outing with no moral or lesson to learn, just good ol’ fashioned, keep-the-plates spinning tension that is just as rewatchable as the epic movies that inspired it.

14. “Relics” (Season 6)

The Next Generation thankfully loosened up on its “no classic Star Trek actors” guest star policy for Season 6’s “Relics,” a thrilling episode written by Ron Moore that brings James Doohan’s Scotty into the 24th Century. 

Prior to Scotty, only McCoy and Spock mingled with Picard’s crew, but Scotty’s episode arguably makes the best use out of revisiting these iconic characters. Here, Scotty struggles with being a man out of time and a fish out of water when he is thrust into a conflict of engineering styles with Geordi as the two must work together to free the Enterprise-D from the massive confines of a Dyson sphere. The episode spends considerable time contrasting the two engineer’s styles, giving Doohan more meaty acting moments in this one hour than any episode or movie did before. Scotty, accustomed to saving the day and with plenty of old war stories to prove it, quickly realizes he’s less of an asset on this Enterprise and more of a has-been. He begins to find his place and relevance once again by sharing a drink with Picard on the bridge of The Original Series ’ Enterprise (albeit a holodeck recreation of it).

“Relics” wisely invests Scotty with a rich exploration of what would really happen if one of the 23rd Century’s most famous heroes finds himself questioning his usefulness in the 24th Century. Moore’s script uses one Trek icon to push and challenge his TNG equivalent, giving fans one of the show’s most exciting adventures.

13. “Chain of Command, Parts I & II” (Season 6)

“Chain of Command” is arguably TNG ’s darkest hour, and one of its most thrilling. This two-parter kicks off with one of the shortest teasers in Trek history: Captain Picard loses command of the Enterprise when Starfleet re-assigns him to lead a Black Ops-esque team on a mission deep into enemy territory. That enemy? The Cardassians. Picard’s job is to find out if these baddies are creating a deadly bio-weapon and but his mission goes sideways; he is soon captured and tortured as a POW by a sadistic Cardassian (David Warner) as Riker bristles against the brash command stylings of Picard’s replacement, Captain Jellico ( RoboCop ’s Ronnie Cox.) 

The second half of this intense storyline is the strongest and most memorable for fans, as it features the infamous “There are four lights!” interrogation scene. Here, a gaunt and delirious Picard combats his captor’s psychological torture as the Cardassian gaslights Picard into submission by promising him freedom if Jean-Luc will admit he sees five lights when there are only four. This battle of wills is fraught with more tension than any space battle could muster, as “Chain of Command” provides a sobering dose of political commentary by tackling the issues of war crimes and genocide in ways only Star Trek could.

12. “The Wounded” (Season 4)

The first appearance of the villainous Cardassians (complete with their funky and quickly-abandoned head gear) is Star Trek: The Next Generation ’s sci-fi take on Coppola’s Apocalypse Now . Only instead of venturing “up river” to terminate a rogue colonel, Picard and Chief O’Brien (Colm Meany) are forced to work with “the bloody Cardys” in pursuit of O’Brien’s former captain, Maxwell ( Shawshank Redemption ’s Bob Gunton). Maxwell has seemingly gone rogue, using his starship to attack what appears to be non-military Cardassian targets.

O’Brien, having fought the Cardassians during a violent war years ago, must grapple with his hate and his duty in an episode that gives the supporting character his first real dramatic showcase. When O’Brien finally has some alone time with the cornered and defeated Maxwell, “The Wounded” earns its namesake as the two sing a melancholic song after sharing war stories of comrades lost that Maxwell’s vengeful PTSD can’t ever bring back. This haunting scene tugs on the heartstrings moments before Picard discovers that the supply ships Maxwell attacked were indeed part of Cardassian efforts to re-arm themselves. It is a revelation that validates Maxwell’s career-ending crusade while also giving the episode one of Trek ’s most bittersweet finales. 

11. “The Offspring” (Season 3)

Data’s earnest endeavors to be more human reach a turning point in “The Offspring,” an emotionally-charged episode of TNG where Data creates his daughter, Lal. 

Just as the android bonds with his child, a veteran Starfleet admiral arrives on Enterprise threatening to pull them apart when he challenges their right to be a family at all. Star Trek: TNG often finds success in exploring Data’s humanity

through the lens of the very humans who would try and take it away from him. “The Offspring” offers an excellent and tearful portrayal of that conflict as the crew comes to their friend’s aid just as Lal suffers a life-threatening issue. It’s a five-boxes-of-tissues affair when Data and the admiral work offscreen to save Lal. No matter how fast Data’s hands move, they fail to prevent Data from having to learn the hardest of humanity’s lessons: Loss. 

10. “Measure of a Man” (Season 2)

Real talk: Star Trek: The Next Generation ’s first two seasons are noble misfires. Their weekly installments have more lows than highs, but one of the few outstanding hours from the series’ early days is the Data-centric “Measure of a Man.” 

When another jerkoff Starfleet scientist comes looking to dissect Data to see what makes him tick, Picard must defend his officer’s sentience in court, and settle once and for all if this android is indeed alive or merely Federation property. The stakes couldn’t be higher — Data either gets to live on the Enterprise or under a microscope — and the drama that unfolds from this classic Star Trek premise is riveting. “Measure of a Man,” Melinda M. Sondgrass’ first writing credit for the show, is full of great dialogue and speeches that spark numerous ethical debates: Who is Starfleet to say that Data is sentient or not? Is their mission to explore new life or to play God when they find it? “Measure” never shies away from debating such topics, which have always been at the heart of Star Trek . It all builds to Picard’s passionate, climactic defense in favor of his colleague and friend — a scene that ranks near the top of Patrick Stewart’s long list of great acting achievements.

9. “Darmok” (Season 5) 

Credit: © Paramount Television/courtesy Everett Collection

Picard’s diplomatic skills are put to the test in “Darmok,” when he is taken against his will and paired with an alien commander who only communicates via metaphor. This “only-on- Star-Trek ” premise offers a potential minefield of narrative obstacles that could easily derail the drama in their execution, but Joe Menosky’s exceptional script for this Season Five episode pulls it off effortlessly. 

Picard, stranded on a mysterious planet with Dathon (Paul Winfield), quickly finds that language can be both a tool and a barrier for success, but only after failing several times in his attempt to communicate with his new alien friend. The two can hear each other's words, but not comprehend their meaning, which eventually leads to one of Picard’s finest moments: A campfire story recounting the tale of Gilgamesh. (But only after Dathon tells the mythic story of Darmok and Jalad, at Tanagra). Here, the two strangers forge a strong alliance — just in time to combat a savage threat. “Darmok” deservedly takes its time to tell a story about how similar we are despite our linguistic differences, and every rewatch of this seminal TNG episode never fails to make that point resonate as deeply as it did when it first aired. 

8. “I, Borg” (Season 5)

The value of life has been a thematic staple of many Star Trek episodes, but few have tackled it with the high-stakes drama like “I, Borg” does.

When the crew of the Enterprise finds an injured Borg drone, Picard must make a choice: Nurse it back to health or use it as a Trojan Horse that can infect the Borg Collective with a fatal virus. When Picard leans closer to condemning this Borg’s life to save millions of others, “I, Borg” thrusts the captain and his crew into a passionate moral debate that results in one of the series’ most powerful moments when Picard confronts the naive drone, one that Geordi has affectionately named “Hugh”. Up until this moment, Picard was hellbent on using Hugh to destroy the alien race that once assimilated him. But the captain has a change of heart while talking to Hugh as Locutus, Picard’s former Borg self. Here, Hugh breaks from the collective by speaking firmly from the “I” instead of “we,” which sends Picard into a wrestling match with his conscience. 

Star Trek rarely colors its heroes in such dark shades, but “I, Borg” succeeds by realistically portraying how someone like Picard isn’t wrong , per say, for wanting to kill those that turned him into a killer. For wanting to punish the Borg for crimes against humanity (and the galaxy) that they have committed and will likely commit again. But can you still be a hero if you do to your enemy what they did to you, and alter and weaponize them? “I, Borg” argues that there are no easy answers to those questions, but the discussion they spark makes for a very profound hour of television. 

7. “Tapestry” (Season 6)

Star Trek goes full It’s a Wonderful Life with “Tapestry”, which is arguably the best of the standalone Q episodes.

After a near-death experience, Picard is shown the life he could have lived had he played it more “safe” in his youth. The path not taken leads Picard away from command and into a blue uniform with a career so unremarkable, even Troi struggles to find something nice to say about it. On the road to nowhere fast, Picard turns to Q for a second chance to get back the only life he knows, even if it means dying to get it. “Tapestry,” written by the inestimable Ron Moore, takes an almost Twilight Zone -y approach in telling this story, which is full of heartfelt moments and surprisingly laugh-out-loud comedy. The lesson Picard learns here, about how rewarding taking risks can be, is a universal one — which explains why "Tapestry" often finds its way near the top of fans’ “must-watch” lists. 

6. “Family” (Season 4)

Honestly, it’s a mini miracle that “Family” got made. 

Before this exceptional episode from TNG ’s fourth season, the series largely steered clear from serialized storytelling. At the time, executive producer Rick Berman and Paramount television were strongly against “sequelizing” any TNG storylines; “no serialized stories” was an unofficial “rule” of television back then. But writer Ronald D. Moore thankfully saw an opportunity to break that rule with a story that he couldn’t pass up: How would Picard deal with the emotional fallout of his time with the Borg? 

With no phaser battles or even a trip to the Enterprise bridge (the only episode in Star Trek ’s run to never have a scene set on the command deck), “Family” pulls off an engrossing hour of television that peels back the curtain on who Picard was, and who he is struggling to be, in the the aftermath of the two-parter “Best of Both Worlds”. Mostly set on Earth, the episode introduces Picard’s family vineyard into Trek canon, as Picard confronts his estranged brother and debates whether or not to leave Starfleet. The only person who can help Picard deal with his trauma is the last person he can stand being with, his brother. Only through their constant bickering does Picard find a sense of satisfying resolution, which gives Stewart one of his most heartbreaking scenes when he finally acknowledges the emotional scars the Borg left him with. 

5. “Cause & Effect” (Season 5)

After a jarring teaser that culminates with the fiery destruction of the Enterprise, “Cause & Effect” unfolds with time loop after time loop as Picard and his crew struggle to free themselves from suffering the same terrible fate. 

Written by Brannon Braga, TNG ’s go-to scribe for high-concept stories, “Cause & Effect” pulls a Groundhog Day two years before the movie was even a thing. It breaks the show’s traditional storytelling mold by repeating the same disaster and making each loop through a new puzzle that both the audience and the crew must solve. Fans were so “in it” with their favorite characters that many called their local affiliates during the original broadcast with concern that something was wrong with the satellite feed as the episode kept repeating scenes. While audiences take the “time loop concept” for granted today, “Cause & Effect” pioneered it in a way that still registers as one of its best and most entertaining executions. 

4. “The Inner Light” (Season 5)

This surprising tearjerker ranks high for fans, thanks in large part to Patrick Stewart’s compelling performance as “The Inner Light” explores the concept of being a living witness to an extinct civilization. In this classic episode, Picard finds himself living the life of a long-deceased man named Kamin, after being zapped by a probe that is seemingly all that remains of Kamin’s civilization. 

The probe allows Picard to live a lifetime in 20 minutes, and experience all the things Picard denies himself to be — namely a husband and a father. The majority of the episode takes place on an alien world as it is slowly undone by Star Trek ’s equivalent of global warming, with Kamin trying to help save his planet from pending doom the way Jor-El tried with Krypton. And like his Superman counterpart, Kamin fails — but he succeeds in providing a glimpse into a society that, while being nothing more than a blip in the galaxy’s grand scheme, still has a legacy worth being remembered. That’s the heartfelt and poignant endnote “Inner Light” imparts on viewers, which explains why this episode still resonates decades after it first aired.

3. “Yesterday’s Enterprise” (Season 3) 

When the long lost Enterprise-C travels through a (what else?) temporal anomaly that alters history, Picard and the crew of the Enterprise-D find themselves in the darkest timeline and at war with the Klingons. The only way to stop this war is to send the C’s Captain Garrett back to when she came from and change history. The only catch? In order to save millions of lives, nearly everyone aboard the Enterprise-C must sacrifice theirs.  

That moral and ethical dilemma at the heart of “Yesterday’s Enterprise” makes this hour more than just a novel “What If…?” detour for the show to explore. It affords TNG a chance to give its main characters a more desperate edge as they debate the notions of fate as participants in a reality that should not exist. At the heart of this drama is Picard, who is more militant and beleaguered than ever as he debates with Whoopi Goldberg’s Guinan (and her time-sensitive intuition) about whether or not to send the other Enterprise’s crew to certain death. 

The return of Denise Crosby’s Tasha Yar gives her character the proper (and heroic) sendoff she deserves, which gets complicated as Tasha falls in love with a member of the C’s crew around the same time she discovers she died in the original Enterprise-D timeline. The internal struggle over restoring the way things were meant to be, by sacrificing lives history already recorded as lost, is a classic Star Trek premise that “Yesterday’s Enterprise” explores to a very satisfying, and action-packed, conclusion. 

2. “The Best of Both Worlds, Parts I & II” (Season 3 & 4) 

Star Trek ’s first-ever season-finale cliffhanger is one of television’s greatest. More than three decades later, fans still get chills at the end of “Best of Both Worlds, Part I” when Riker gives the chilling order to “fire” on the Borgified version of his former Captain Picard. 

The wait for this iconic storyline’s resolution made the Summer of 1990 a very long and agonizing one for Trek fans, but it was worth it. “Best of Both Worlds, Part I” has TNG mining similar character drama as Star Trek II: The Wrath of Khan did, with Commander Riker forced to confront why he keeps passing up one promotion to Captain after another — just as his Captain is taken by the Borg in a violent attempt to turn Picard into Locutus, the public face of their campaign to assimilate Earth and all of humanity. The episode is a nail-biter, thanks to a perfect script from the late writer Michael Piller. The former TNG showrunner takes a bigger-than-usual swing with the characters to tell a story somewhat outside of the series’ comfort zone. While “Part II” falls a bit short of the dramatic highs of “Part I,” it finds great success in dramatizing the crew’s struggle to get their Captain back (even if their final solution is ultimately more convenient than inspired.)

The Enterprise crew’s second encounter with the evil cybernetic beings would have consequences throughout the next 30-plus years of Star Trek , especially in 1996’s Star Trek: First Contact . The hit movie serves as a big-screen, action packed therapy session for Picard to deal with the trauma of his assimilation into the Borg collective.

1. “All Good Things…” (Season 7)

“All Good Things…” is the best Star Trek series finale ever and The Next Generation ’s crowning achievement. 

Written by Brannon Braga and Ronald D. Moore, “All Good Things” proved to be a better cinematic-worthy adventure than The Next Generation crew’s first movie, Star Trek: Generations . The briskly plotted, feature-length episode — and its complex storyline involving paradoxes and second chances — finds a disoriented Picard struggling to uncover why he is moving back and forth through time. He slips in and out of three key time periods: The past, just before the launch of Enterprise-D’s first mission; the present, and the future. In the future, Picard is a very retired, very old man, who runs his family’s vineyard. He also is afflicted with a debilitating neurological syndrome that makes it hard for his former shipmates to believe him when he starts pulling a Sliders across multiple timelines. Picard’s mission — which, of course, is being manipulated by the omnipotent Q — forces the captain to convince all three versions of his crew to work together in each timeline in order to stop an anomaly from unraveling existence as we know it. 

TNG gives the beloved cast and their characters a perfect final episode that brings them together as a family in ways the series left surprisingly unexplored for most of its run. As impressive as the action is in “All Good Things”, especially the scene where the futuristic Enterprise-D flies on its Z-axis while blasting newly-mounted phaser cannons, the episode’s best scenes are the quieter ones spent with these characters. The finale truly shines in its final moments, when Picard joins his crew for the first time at their regular poker game. Picard’s arrival at the poker table resonates with his crew as deeply as it does for fans, which is a testament to the finale’s commitment to giving Next Generation the emotional send off it deserves. 

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The best Star Trek series, ranked

Ready to settle in and watch some Star Trek episodes? Since there are so many, we’ve ranked all of the different series to help you get started on your quest.

Star Trek is one of the greatest franchises ever created. If you're new to the world of transporters and holodecks, you have so much wonderful content to catch up on — of course, some would say too much content.

Since there are over 850 episodes and counting (all of which you can stream on Paramount+ ), watching all of Star Trek can be more difficult than fighting a Gorn in the desert. To make things easier for you to get started, we've ranked every series (besides the short-form series Short Treks ) of this long-running franchise. Some of these choices were a bit daunting to play favorites with, but, like Jim Kirk, there's no belief in the no-win scenario.

Without further ado, here's our list of every Star Trek series ranked from worst to best.

11. Star Trek: Picard (2020–2023)

Star Trek: Picard was meant to be like comfort food to fans of Star Trek: The Next Generation . And whether fans were turned off by the changes in franchise direction with shows like Discovery or just wanted to see Patrick Stewart back in action, Paramount clearly thought this show would be almost universally beloved.

That didn't happen . The warm and fuzzy feeling of seeing a few familiar faces in the first season evaporated because of an often-confusing plot about androids. The second season continued this confusion with a time-travel story that often bordered on incoherence. While many Star Trek shows take a few seasons to hit their stride, it was shocking that so much of this relatively short series was seemingly created with "make it so-so" in mind.

10. Star Trek: The Animated Series (1973–1974)

If you're in the right mood (or you've been sipping on some Saurian brandy), Star Trek: The Animated Series has some wacky entertainment value. Any given episode had the writers throwing in stories like a giant version of a beloved character. And the animators threw some fun curveballs, including making the embodiment of evil into a shirtless hottie that would make even shirtless Kirk jealous.

However, this animated show was often caught between two very different worlds. It wasn't fully a return to the (relatively) grounded exploration of space, science, and morality of The Original Series . And it didn't fully lean into the chaotic possibilities of a cartoon world (something Lower Decks would later handle much better). So, while more and more elements of The Animated Series have become canonical thanks to shows like Discovery , and it's fun to hear the voice acting of the Original Series cast, this cartoon is one that all but the most hardcore fans can skip.

9. Star Trek: Enterprise (2001–2005)

Despite what you might have heard, Star Trek: Enterprise is not a bad show. It just didn't start as a very good show. The series was tragically canceled after the fourth season, which was arguably when it had just begun to hit its stride (thanks in part to longer story arcs and a really fun glimpse into Trek 's popular Mirror Universe).

At the end of the day, Enterprise is a show best enjoyed by Star Trek fans that like to pore over the Memory Alpha wiki and familiarize themselves with Trek minutiae. As a prequel show, it laid the groundwork for everything from Starfleet policy to alien interactions that other shows explore in more detail. If you don't have a shot at winning any Star Trek trivia contests at your local bar, it's still worth watching how captivating Scott Bakula can be in the captain's seat.

8. Star Trek: Prodigy (2021–present)

Star Trek: Prodigy was very difficult to rank. Unlike the other two Trek cartoons, this series was explicitly designed for younger audiences. Paramount clearly wants to use this show as a gateway for these younger fans to explore the wider world of Star Trek , but there are enough elements (most notably the return of Kate Mulgrew , reprising her role as Captain Janeway via a holographic form) to keep veteran franchise fans invested.

Ultimately, your enjoyment of this series will be largely dependent on how much you enjoy animated/YA entertainment. If nothing else, you should check out the first two episodes of this show to see just how beautiful the CGI animation can get.

7. Star Trek: Discovery (2017–present)

If Enterprise is the Star Trek show cut off too soon, Discovery may very well be the first Star Trek show to outlive its welcome, though it will end after its fifth season . There are many things the show gets right, from nifty effects to quirky characters to amazing casting (seriously, Sonequa Martin-Green is electrifying whenever she is on screen).

The show veers from a disjointed-but-interesting first season to a mesmerizing second season, which gets a real shot in the arm by introducing Captain Pike (played by the inimitably charming Anson Mount ) and Spock (played as a perfect homage to Leonard Nimoy by Ethan Peck). Later seasons, however, prove that the series can't get away from galactic-level threats, and character drama begins overriding plot development enough that we want to slingshot around the sun and return this series to its earlier roots.

6. Star Trek: Voyager (1995–2001)

Like many Trek series, Star Trek: Voyager had a rocky beginning, and it was often overshadowed by the excellent Deep Space Nine . Ironically, Voyager dramatically improved with what could be a cynical casting stunt: adding the alluring Jeri Ryan (constantly wearing a catsuit, no less).

Though it really looked like a desperate ratings stunt, Ryan turned the reformed Borg Seven of Nine into the most interesting character on the show. And, despite their alleged clashes behind the scenes, the actress helped to elevate every scene she shared with Kate Mulgrew. Between the new cast member, improved writing, and Mulgrew being nothing short of a damned icon, Voyager soon became appointment television, and it's definitely worth binge-watching for modern audiences.

5. Star Trek: Lower Decks (2020–present)

Lower Decks is an impressive show for many reasons, including the fact that its execution elevates its initial premise, which focuses on the lives of the lower-level staffers aboard the starship. Because showrunner Mike McMahan previously wrote for Rick and Morty and the animation takes its cues from the cartoon adventures of Rick Sanchez, many fans may have assumed Lower Decks would simply be " Star Trek meets Rick and Morty ."

Thankfully, that's not the case. Aside from animation similarities, the main element these two cartoons have in common is a breakneck, borderline chaotic pace. But as entertaining as it can be, Rick and Morty is an often nihilistic show with gags revolving around how nothing really matters. Lower Decks , however, is a lighthearted series that serves as the cure to modern Trek . If you've dismissed other contemporary series such as Discovery and Picard because they are grim, violent, and serious, Lower Decks is a wonderfully lighthearted alternative that is never afraid to poke fun at its own franchise.

4. Star Trek: Strange New Worlds (2022–present)

Star Trek: Strange New Worlds is a truly pleasant surprise to fans of the franchise. Set years before Captain Kirk sat in that famous chair, we see Capt. Christopher Pike (Anson Mount reprising the role) lead the U.S.S. Enterprise into bizarre adventures alongside some familiar characters (Ethan Peck returning as Spock, for example) and a few new ones.

Part of what helps this show shine is that it marks a return to episodic Trek in that every installment is a self-contained adventure as opposed to other newer series like Discovery and Picard , which build entire seasons around a single plot. The characters all ooze with the same swashbuckling charm of The Original Series characters, and we can't wait to see more of their adventures. We also can't wait to see more of Anson Mount's amazing hair (arguably the most awesome practical effect in the franchise).

3. Star Trek: The Next Generation (1987–1994)

Star Trek: The Next Generation has the dubious honor of being the first Trek show where veteran fans warn against new fans starting at the very beginning. Early episodes ranged from stupidly horny (planetary inhabitants in the episode "Justice" were barely wearing scraps of clothing) to ridiculously racist ("Code of Honor" may very well be the worst Star Trek episode ever made). Many of these problems stemmed from the fact that despite being called "The Next Generation," the show was trying to recreate The Original Series (right down to using some of the same writers and shamelessly reusing scripts from the scrapped Star Trek: Phase II series).

As fans like to joke, the show got better as Commander Riker's beard got longer. Season 2 was a major improvement, which was then usurped by season 3, which brought in new uniforms, new sets, and Michael Piller to head up the writing team. Just like that, TNG embraced its differences from its famous forerunner (Picard was cerebral whereas Kirk was impulsive, Data yearned for emotion whereas Spock detested it, and so on). At last, the gamble paid off, and the next generation of this franchise ushered in the next generation of Star Trek fans.

2. Star Trek: The Original Series (1966–1969)

What can we say about The Original Series that hasn't been said already? Gene Roddenberry successfully fused science fiction with American pioneer spirit to create his vision of this " Wagon Train to the stars." The episodes were both fun and thought-provoking in equal measure, and William Shatner as Kirk and Leonard Nimoy as Spock, among many others, turned in performances that seared themselves into our collective pop culture consciousness.

The Original Series offered social commentary about racism, imperialism, and (often to Spock's annoyance) the human condition. And the blend of big acting, ambitious sets, and poignant plots helped this show become something truly transcendent. The OG Star Trek shaped not only the future of the franchise but television itself, and it's not hard to see why it continues to win over new generations of fans year after year.

1. Star Trek: Deep Space Nine (1993–1999)

Placing Star Trek: Deep Space Nine in the top spot is perhaps a contentious decision. However, this series did more than measure up to the quality of The Next Generation (a lofty feat in and of itself). The show also made a number of storytelling and production choices that have helped DS9 seem more relevant in recent years than ever before, including tackling issues about race, religious fundamentalism, and war on a regular basis.

Perhaps the main way DS9 feels so pertinent is that the show broke the longstanding Trek rule of making only standalone episodes. As the powers that be focused more on creating their next show, Voyager , DS9 showrunner Ira Steven Behr was able to get away with creating long story arcs and frequent episode callbacks. The end result of this is that Deep Space Nine is the first of the pre-streaming era Trek shows that is perfect for binge-watching.

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The 10 Best 'Star Trek' Episodes Ever

Best 'star trek' episodes.

With five live-action TV series, each ranging from three to seven seasons, there's been a ton of great "Star Trek" over the years. Here are 10 episodes — two from each live-action series — that we rank as the best. In each of these episodes, you're guaranteed to learn something about the "Star Trek" universe and, in some cases, even challenge your own moral beliefs about right and wrong.

10. "Regeneration," 2003 ("Star Trek: Enterprise")

The Borg's terrifying powers of assimilation are tough enough to face when you're in a starship with weapons on board. But what about if they were discovered on your own planet? "Regeneration" shows what happens when Borg are found above the Arctic Circle on Earth, facing a fairly unprepared group of people — remember, "Enterprise" is a prequel series and takes place just as starship travel begins. The creative methods "Enterprise" used in fighting the Borg are fun to watch.

9. "Equinox," 1999 ("Star Trek: Voyager")

As fans of the series know, the premise of "Voyager" is that the crew becomes stranded some 75 years' travel away from home. By Season 6, we are pretty confident that the crew has well assimilated (so to speak) this knowledge, but they come across a ship in the same quadrant that has more questionable methods in dealing with the problem. We see the stranded ship engage in subterfuge in this two-parter during the Season 6 finale and Season 7 premiere, which reminds us of how badly "Voyager" could have gone with a different crew. While "Star Trek" only touched on this theme briefly in "Voyager," mutiny by crews is also explored a few times in the series "Battlestar Galactica" in the 2000s.

8. "Borderland" / "Cold Station 12'' / "The Augments," 2004 ("Star Trek: Enterprise")

This incredible trio of episodes has some throwbacks to "Star Trek: The Next Generation" — mentions of Dr. Arik Soong, the grandfather of Data's creator, for instance — as well as the original "Star Trek," with some oblique references to the noted villain Khan . While these episodes came too late in the run of "Enterprise" to save the series from cancellation, they did show some creative flair with "Star Trek" lore, with the addition of references to genetic engineering, a hot topic in the current affairs of the time.

7. "Emissary," 1993 ("Star Trek: Deep Space Nine")

Pilots of "Star Trek" series are often unbearable to watch, but this one is an interesting exception. Viewers saw an interesting puzzle early in the two-part episode. The beloved Capt. Jean-Luc Picard of "The Next Generation" is portrayed as an enemy to Benjamin Sisko, the man considering taking the position of commander on "Deep Space Nine"; the conflict stemmed from a Borg attack and the death of Sisko's wife. There's nothing better than starting a new series with a moral quandary for fans to argue about. [ 'Star Trek' Stars Celebrate 50 Years of Hope at Comic-Con ]

6. "Living Witness," 1998 ("Star Trek: Voyager")

Writing history is never a neutral process, as there are so many viewpoints to consider. At times, countries must come to grips with the mistakes of their past that their ancestors may have actually believed were victories. In "Living Witness," the holographic doctor of "Voyager" is reactivated about 700 years after the series' events take place. He sees a museum exhibit that talks about the "warship Voyager" and some things the starship did that this museum portrays as extremely negative; the doctor then spends most of the episode trying to set the record straight, as he was there at the time.

5. "In the Pale Moonlight," 1998 ("Star Trek: Deep Space Nine")

Here, an Enterprise crewmember turns bad — but for the greater good. Commander Benjamin Sisko decides that he needs to bring the Romulans, a noted enemy of the Federation, onto the Federation's side to win a greater war. Immediately, the unprepared Sisko is thrown into a situation where he needs to ally with a Cardassian spy, a former prison convict and other unsavory characters to get the job done. We'll let you watch the episode to find out the conclusion, but let it be known that Sisko does break a few rules in his quest — and that he still thinks it's the best choice, even though he has some moral qualms about it.

4. "The Best of Both Worlds," 1990 ("Star Trek: The Next Generation")

The Borg — a race that assimilates everything that comes into its way into a vast collective — make an unexpected invasion of an area that is supposed to be reserved for the United Federation of Planets, which the USS Enterprise represents. Through a series of complicated events, the starship comes face-to-face with the Borg, and Picard is captured, ultimately becoming assimilated by the aliens. This season ended on a cliffhanger, with Picard — calling himself "Locutus of Borg" — ordering the USS Enterprise to surrender and assimilate. The cliffhanger, considered a huge shocker at the time, set up several other Borg-related episodes as well as the movie "Star Trek: First Contact" (1996). [ The Evolution of 'Star Trek' (Infographic) ]

3. "The Menagerie," 1966 ("Star Trek: The Original Series")

This two-part episode plays on our expectations of Spock, a logical Vulcan alien who usually runs things exactly by the book. In an uncharacteristic maneuver, the Vulcan kidnaps his former commander, Christopher Pike. He sets the Enterprise on course to Talos IV — a planet that Spock well knows is off-limits for Federation officers — and then Spock voluntarily assents to a court martial to talk about why. "The Menagerie" is noteworthy not only for playing with our expectations of reality but also for a creative use of old footage. A large part of the episode reruns parts of "The Cage," the original pilot for "Star Trek." That pilot was ultimately scrapped, and the series launched with an almost entirely rebooted set of main characters. [ What I Learned by Watching Every 'Star Trek' Show and Movie ]

2. "The Trouble with Tribbles," 1967 ("Star Trek: The Original Series")

Tribbles are an adorable species — fuzzy, small, almost like a spherical teddy bear — that have an unfortunate ability to reproduce. After the crew receives a single Tribble, generations of Tribbles quickly begin to take over the USS Enterprise, soon crowding the crewmembers out of their own quarters. Before long, the Tribbles start getting into the food stores and consuming anything edible on the Enterprise. The ultimate solution to the problem is creative. And don't worry — you don't see anything bad happen to these cuties. In the meantime, you can enjoy the hilarity, including a wonderful scene where a shower of Tribbles drops onto Capt. James T. Kirk's head.

1. "The Measure of a Man," 1989 ("Star Trek: The Next Generation")

"Star Trek" turns its attention to the android Data in a heartbreaking episode about how easily human rights can be disregarded for those who are a bit different. Data, we are informed, is going to be disassembled so that Cmdr. Maddox (a Starfleet cyberneticist) can study him. Data, naturally, is not pleased with this prospect and would like to resign, but he's told he can't because Starfleet considers him property. This sets the stage for a riveting legal drama, where Capt. Jean-Luc Picard represents Data's interests and Cmdr. William Riker is pressed into reluctantly representing Maddox's side.

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Elizabeth Howell (she/her), Ph.D., is a staff writer in the spaceflight channel since 2022 covering diversity, education and gaming as well. She was contributing writer for Space.com for 10 years before joining full-time. Elizabeth's reporting includes multiple exclusives with the White House and Office of the Vice-President of the United States, an exclusive conversation with aspiring space tourist (and NSYNC bassist) Lance Bass, speaking several times with the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, " Why Am I Taller ?", is co-written with astronaut Dave Williams. Elizabeth holds a Ph.D. and M.Sc. in Space Studies from the University of North Dakota, a Bachelor of Journalism from Canada's Carleton University and a Bachelor of History from Canada's Athabasca University. Elizabeth is also a post-secondary instructor in communications and science at several institutions since 2015; her experience includes developing and teaching an astronomy course at Canada's Algonquin College (with Indigenous content as well) to more than 1,000 students since 2020. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday. Mastodon: https://qoto.org/@howellspace

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10 Best Episodes of Star Trek: The Original Series, According to IMDb

Star Trek is one of the most universally beloved television shows, but which are the original series' best episodes according to IMDb.

It's impossible to imagine a world without Star Trek in it. Gene Roddenberry's creation, which he explained as " Wagon Train to the stars " influenced not only the look and design of cellphones, but was the doorway to science, math, and engineering for hundreds, if not thousands, of the people who work in those fields today. And it all started with a low rated TV series that barely lasted three seasons.

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Star Trek: The Original Series seemed destined to be a forgotten relic before syndication brought it a whole new fanbase in the 1970s, relaunching the franchise to grand new heights that continue to this day. We took the time to find out what the 10 best episodes of Star Trek: The Original Series are, according to the fans over at IMDb...

10 The Devil In The Dark: 8.4

Over the years, the original Star Trek episodes have taken their fair share of jabs, due in part to the many cheesy looking aliens the shows have had. "Devil in the Dark" is a favorite for people to goof on. From the outside, it's easy to see why people would laugh at this episode; the threat is an alien that looks like an old dirty rug. In truth, "Devil in the Dark" shows just how great these stories could be.

In the episode, the Enterprise is sent to investigate a mining colony that is being terrorized by an underground creature. When they find the monster, Mister Spock  uses his mind-meld abilities to connect with the creature and discovers that it is only trying to protect its young.

9 The Enterprise Incident: 8.5

After the Enterprise travels into Romulan space, breaking the treaty between the Federation and the Romulan Empire,  Captain Kirk and Spock are taken aboard a Romulan ship. Spock claims that Kirk has gone mad and ordered the crew to break the treaty. When Kirk tries to escape, Spock is forced to stop him and in the fight, Kirk appears to die. All of this, of course, is part of a larger plan for the Federation to get their hands on the Romulan cloaking technology. This episode has everything that makes Star Trek great; action, intrigue, and William Shatner playing it up for the audience.

8 Journey To Babel: 8.6

As the Enterprise transports diplomats to a conference on the planet Babel, things go from tense to deadly after Kirk is badly wounded by an assassin and the Enterprise is damaged by a surprise attack. With a spy on the ship, the Captain out of commission, and the delegates all blaming one another, Mister Spock is put in charge.

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One of the diplomats on the ship, Sarek, is actually Spock's dad, which comes as a surprise to the Science Officer's shipmates. And adding to all the drama, Sarek is dying and needs a blood transfusion that only Spock can provide.

7 Amok Time: 8.7

The Vulcans pride themselves on their mental strength, always putting logic above all else. That is why they don't like to tell others about the Pon Farr, a period that every Vulcan goes through where they devolve to a more base creature driven by a need to mate above all else. If Spock isn't treated for the condition within eight days, he will die.

To save Spock, Kirk diverts the Enterprise to Vulcan where Spock is to marry T'Pring. At the marriage ceremony, T'Pring stops the proceedings and demands the right of challenge, allowing her to select a person for Spock to fight to the death. The person T'Pring chooses to fight the mad Vulcan? Kirk.

6 The Doomsday Machine: 8.8

Following a trail of decimated star systems, the Enterprise finds the badly damaged USS Constellation. The only survivor is the ship's commander, Matt Decker. Decker explains that the Constellation was attacked by a giant machine that is ripping planets apart and using them for fuel. To stop the planet killer, Kirk decides to fly the damaged Constellation into the machine himself. The plan calls for Scotty to teleport Kirk back to the Enterprise just before the Constellation explodes, hopefully taking out the planet killer at the same time, but when the transporter breaks down, things get scary for everyone.

5 Space Seed: 8.9

There are a number of great adversaries across the seven Star Trek shows  and the thirteen movies they have spawned, but no adversary is as great as Khan Noonien Singh. Khan, as the crew of the Enterprise, learns after waking him and his own crew up from suspended animation aboard the SS Botany Bay, was a leader in the Eugenics Wars of the 1990s, controlling a quarter of the Earth as a dictator before being brought down and launched into deep space. Khan quickly tries to take over the Enterprise, leading to one of the best Captain Kirk fights of all time. Without this episode, there would be no Star Trek II: The Wrath of Khan , and we would all be worse off for it.

4 The Trouble With Tribbles: 8.9

The humor of Star Trek often gets overlooked by the masses, but the shows are actually very funny when they want to be . Perhaps no episode better shows this than "The Trouble With Tribbles". After receiving a Priority One distress call, the Enterprise arrives at Deep Space Station K7 to learn that they were summoned there to protect a grain shipment that is scheduled to be delivered to a planet that the Klingons are also trying to colonize.

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With little to do, the crew of the Enterprise uses there time on the station for a little R&R only to find that there are Klingons on K7 as well. While Scotty and Checkov get into a bar fight, the others become obsessed with a man selling little pets called Tribbles. They're cute, they're furry, and they are a whole lot of trouble.

3 Balance Of Terror: 9.0

One of the most in your face episodes when it comes to messages about racism, "Balance of Terror" is an intense episode where the Enterprise and a Romulan ship find themselves in a submarine-style standstill as both crews try to outmaneuver the other. As we learn in the episode, this is the first time anyone from the Federation has ever actually seen a Romulan, and when the crew of the Enterprise learns that Romulans look just like Vulcans, some members begin to question Mister Spock's loyalty to the Federation.

2 Mirror, Mirror: 9.2

A transporter accident sends Captain Kirk and his crew to an alternate universe where they come face to face with evil versions of themselves. Possibly the most referenced episode of any Star Trek series, "Mirror, Mirror" and the evil alternate universe , usually called the "Mirror Universe", has played an important part in other Star Trek series, including Deep Space Nine , Enterprise , and Discovery .

The idea of a reality where evil versions of our heroes exist wasn't a new idea when Star Trek introduced the Mirror Universe, DC Comics showed readers Earth-Three just four years earlier. On Earth-Three, the members of the Justice League were world dominators called the Crime Syndicate of America, and Lex Luthor was a hero.

1 The City On The Edge Of Forever: 9.3

The most celebrated episode of Star Trek not only by fans but by the world, "The City On The Edge Of Forever" sees Kirk, Spock, and Doctor McCoy trapped in New York City in 1930, right at the height of the Great Depression. As Kirk and Spock search for a crazed McCoy who had accidentally injected himself with an overdose of cordrazine, they take shelter in the 21st Street Mission and meet Edith Keeler, played by Joan Collins.

As Kirk finds himself falling in love with Edith, Spock learns her fate. Edith Keeler, the leader of a pacifist movement, will be struck by a car and die in just a few days. Kirk wants to save her, but if he does, there is a great chance that her movement will keep the United States out of World War II, leading to Hitler taking over the world and changing history forever. With no other choice, Kirk must stand by as the woman he loves is killed.

NEXT: 10 Ways Star Trek Spinoffs Are Better Than The Original Series (And 10 Ways TOS Takes The Cake)

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Star Trek TV Shows Ranked by Tomatometer

Updated: September 8, 2023

The Star Trek universe kicked off in 1966 with the original series , created by science fiction visionary Gene Roddenberry , and later exploded into a massive film and TV juggernaut.

While the original series, which starred William Shatner as Captain James T. Kirk and Leonard Nimoy as Mr. Spock, saw only three seasons, it made an indelible impression on the sci-fi genre. Live-action TV follow-up Star Trek: The Next Generation , with  Patrick Stewart as Captain Jean-Luc Picard leading an ensemble cast, captivated viewers from 1987–1994 and inspired three more series that would air within the next decade:  Star Trek: Deep Space Nine ,  Star Trek: Voyager , and  Star Trek: Enterprise .

Starting with 1979’s  Star Trek: The Motion Picture , Paramount Pictures has been regularly cranking out Trek films with the original series and Next Generation casts, as well as a rebooted version in 2009 with Chris Pine as Starfleet Academy cadet James Kirk and Zachary Quinto as young Spock. ( See the Star Trek films ranked here. )

In 2017,  Trek  returned to small screens with season 1 of CBS All Access streaming title  Star Trek: Discovery , set during a tumultuous wartime era about a decade before the original and starring Sonequa Martin-Green . The new series marked a TV franchise reboot by Alex Kurtzman , writer on the 2009 Star Trek film and its sequel  Star Trek Into Darkness .

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The year 2020 gave fans a celebration of one of its most iconic characters with the premiere of Star Trek: Picard and Stewart reprising his role in the new streaming series that launched its second season in 2022. New live-action series Star Trek: Strange New Worlds was also released in 2022, and its first season was quickly Certified Fresh with a 100% Tomatometer score (it has since dropped to 99% on one review). The show’s second season, released in 2023, was nearly as well received and is Certified Fresh at 97% on the Tomatometer.

The TV franchise has since introduced two animated series Star Trek: Lower Decks , about the misfit support crew on one of Starfleet’s least-important ships, and kid-friendly Star Trek: Prodigy , which tells the story of a diverse group of teens who inadvertently become the crew of a prize starship and learn important lessons in their subsequent adventures. The latter series — No. 3 on our list below — has since been canceled by Paramount+, but a petition to save the show has gathered over 33,000 signatures.

Have a look below to find out which series score highest with critics in our Trek TV by Tomatometer list.

Disagree with the results? Tell us in the comments which series you think should have been ranked higher (or lower).

Star Trek: Strange New Worlds (2022) 98%

Star Trek: The Animated Series (1973) 94%

Star Trek: Prodigy (2021) 94%

Star Trek: Lower Decks (2020) 92%

Star Trek: The Next Generation (1987) 92%

Star Trek: Deep Space Nine (1993) 91%

Star Trek: Picard (2020) 89%

Star Trek: Discovery (2017) 85%

Star Trek (1966) 80%

Star Trek: Voyager (1995) 76%

Star Trek: Enterprise (2001) 56%

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30 Best Star Trek: The Next Generation Episodes Ranked

The first ever "Star Trek" spin-off, "The Next Generation," ran for seven seasons between 1987 and 1994. It defied conventional wisdom by reinventing the notion of what "Star Trek" was, introducing audiences to an entirely new ship and crew.

Living in the shadow of Kirk and Spock early on, most agree that the first two seasons disappointed , even if they showed a lot of promise (the troubled production of these initial seasons became the subject of the 2014 HBO documentary "Chaos on the Bridge"). But "The Next Generation" would become one of the best sci-fi shows ever once it found its footing and came into its own in its third year. With 178 episodes during its run, there are dozens of all-time greats, many of which just narrowly miss making this list. Episodes like "Remember Me," "The Wounded," and "Sins Of The Father" are all worthy watches, but here are the 30 that rank as the best according to IMDb.

30. Chain of Command, Pt. I

The sixth-season episode  "Chain of Command, Pt. I"  opens with Riker and the crew shocked when Starfleet removes Captain Picard from command and gives the Enterprise over to Captain Edward Jellico ("Robocop" villain Ronny Cox). But we soon learn that Picard, along with Doctor Crusher and Lieutenant Worf, is actually being sent on a covert mission inside Cardassian territory to stop a dangerous biogenic weapon, while Jellico is ordered to take the ship to the demilitarized zone to negotiate with the Cardassians. 

Even before Picard leaves, there's tension in the air. The Enterprise crew view their new captain as demanding and overbearing, while Jellico views them as soft and lazy. But though audiences may have assumed the change of command was just for a single story, the episode ends on a shocking cliffhanger that leaves the future of the entire series up in the air.

"Family"  is the direct follow-up to the beloved "Best Of Both Worlds" two-parter that saw the captain turned into the Borg villain Locutus. As part of his recovery, Picard takes a vacation to his home village in France, staying with his brother Robert and his family. The pair of siblings have a strained relationship, but Picard finally opens up to Robert about his traumatic experience with the Borg, giving fans a new insight into the soul of the Enterprise's captain.

In a B-story, Worf is visited by his human foster parents while the ship is docked above Earth. The two are concerned for Worf, who is still dealing with his exile from the Klingon Empire the previous season, and offer their support. Together, the two family-related plots form the backbone of an episode with no space action or alien contact, but with drama that is much more poignant and personal.

28. Reunion

"Reunion"  features the return of Lieutenant Worf's lover K'Ehleyr, previously seen hooking up with the Enterprise's Klingon security officer in Season 2. This time, she comes aboard with news of an impending Klingon war, and has come at the request of Chancellor K'mpec, who is on his deathbed. After he dies, he needs Picard to ferret out the man who poisoned him: one of the two men vying for the leadership of the Empire. Newcomer Gowron is one suspect, but the other is Duras, who had framed Worf's father to cover up his own family's dishonor in the Season 3 episode "Sins Of The Father."

When K'ehleyr arrives, however, she also brings a surprise: Alexander, the child she bore with Worf two seasons earlier. An important episode that changes the lives of several characters and introduces the fan-favorite Gowron , "Reunion" is also a key piece of the story of Worf's family honor that would continue throughout "The Next Generation" and into "Deep Space Nine" — his son Alexander would become a recurring character in both series.

27. The Drumhead

Retired and revered Rear Admiral Norah Satie comes to investigate the Enterprise in  "The Drumhead"  when there appears to be a saboteur onboard. After a rogue Klingon exchange officer is caught stealing information, the case is seemingly closed, but when the warp core is damaged in an apparent act of sabotage, Satie comes to believe there are others involved. What follows is a dark tale that sees the admiral peeling back layers of what she thinks is a vast conspiracy.

But after exposing a young officer who lied about his heritage to get into Starfleet, Satie threatens to drag everyone into her web of suspicion, even Captain Picard. "The Drumhead" is a fascinating look at paranoia and how fear can be used to subvert democracy, spreading like a disease, all in the name of freedom and liberty. It's a cautionary tale, and one of "Star Trek's" most timeless political parables.

26. The Next Phase

"The Next Phase"  adds a new stunning piece of advanced technology to "Star Trek" lore when the Enterprise comes to the aid of a disabled Romulan ship experimenting with a "phasing cloak." When the ship's transporter mixes up LaForge and Ensign Ro, the pair become trapped in a kind of limbo, cloaked and phased so they can pass through ordinary matter. Unable to communicate with anyone else aboard the Enterprise, the situation escalates when they overhear the Romulan commander tell his crew to rig the ship so that the Enterprise will be destroyed when they activate their warp drive.

With the clock ticking, Geordi and Ro must find a way to warn their shipmates and return to their normal state, all while being pursued by a Romulan who they find trapped out of phase with them. Fast, fun, and exciting, "The Next Phase" is one of the series' most thrilling adventures.

25. Time's Arrow Pt. I

The fifth-season cliffhanger finale  "Time's Arrow"  opens with archaeologists uncovering Data's head buried beneath San Francisco. Realizing the discovery means that at some point in the future Data will be hurled back in time to the 19th century, where he will die, Picard attempts to keep Data safe from this lethal destiny. But when an unusual signal leads the Enterprise to discover an alien race who is traveling into the past and murdering humans in 1893 to absorb their life force, the Captain realizes it may simply be Data's fate to die in the past. 

Sent back in time, Data allies himself with the 19th-century version of the Enterprise's bartender, Guinan, who turns out to be far older than anyone ever realized. At the same time, he's also brought to the attention of Mark Twain, who will become an unexpected adversary in the second half of the two-part adventure. Though not the most bombastic of episodes, it proves its worth as a classic "Trek" time travel story.

24. Unification Pt. II

After the reveal that Leonard Nimoy would be returning as Mr. Spock in the Season 5 two-parter "Unification," some fans were left disappointed when his appearance in the first part was limited to a single scene in the closing moments. But he takes center stage in  "Unification, Pt. II,"  which sees Spock on Romulus after apparently defecting from the Federation. Picard and Data — disguised as Romulans themselves — find that Spock is working with an underground sect that wants to reunify the Romulans with their Vulcan cousins.

The episode also featured the unexpected return of the  Romulan villain Commander Sela  and includes some classic moments between Spock and the "Next Generation" crew, particularly Data. Picard and Spock, meanwhile, share some of the most important and thoughtful interactions in all of the series, and in his final television performance as his Vulcan character, Nimoy delivers a momentous performance.

23. Redemption, Pt. II

Season 5 opener  "Redemption, Pt. II"  concluded the cliffhanger from the fourth-season finale, revealing the mastermind behind the Romulan alliance with the Klingon Duras family to be Commander Sela, who claims to be the daughter of long-dead Enterprise security chief Tasha Yar. As the two Klingon factions — led by Chancellor Gowron and the Duras sisters — duke it out for the fate of the Empire, Worf resigns his commission and joins the fight. Picard and the Enterprise had previously vowed to remain neutral, but now devise a plan to expose Romulan involvement.

The plan, involving a fleet of Federation starships forming a blockade around the Neutral Zone, puts Data in the captain's chair of the USS Sutherland, where he must contend with the bigoted Lieutenant Hobson. An episode filled with drama, it gives both Worf and Data some of their best, most satisfying moments in the series.

22. Redemption, Pt. I

"Redemption, Pt. I,"  the Season 4 finale, opens with Gowron requesting that Captain Picard see through his commitment to help install him as the new Klingon Chancellor. But a challenger appears in the form of a young warrior named Toral, brought forward by the Duras sisters, who themselves are the surviving kin to the man Worf killed in combat in "Reunion." Known traitors, the House of Duras cannot be trusted, but Picard — as the Klingon Arbiter of Succession — is duty-bound to consider their claim.

When Toral is dismissed as possible leader of the Empire, a Klingon civil war begins. But all is not as it seems — Worf suspects that the Duras sisters are getting help from the Romulans, and leaves Starfleet to aid in Gowron's fight against them. Full of twists and turns, it doesn't quite match the legendary Season 3 finale, but it comes close.

21. The Defector

"The Defector"  is classic "Trek" — a gripping political drama, the story of an enemy soldier who defects to the Federation, risking his life to help avert a war. Claiming to be a low-level logistics clerk, a Romulan officer named Setal insists that his people are readying for an all-out invasion, and he has deserted his homeworld to warn the Federation. Picard is skeptical, as to prove Setal's claims, the Enterprise must enter the Neutral Zone in violation of the Federation's treaty with the Romulan Empire, and at the risk of starting a war.

Stuck in this quandary, Picard and his crew must decide whether Setal is telling the truth and truly trying to help, or is in fact attempting to bait him into being an aggressor. With the stakes so high, "The Defector" is a tension-filled episode that ends in a dramatic and surprising conclusion — particularly when Setal's true identity is revealed.

20. The Offspring

An important and sometimes overlooked episode, the "The Offspring"  sees Commander Data create his own android child named Lal. Choosing her own appearance and gender identity, Lal becomes a young human woman with a naive but wide-eyed and wondrous outlook and personality. But things take a dark turn when a Starfleet admiral arrives to take Lal away, claiming that the creation of a new android life needs to be carefully overseen by Federation experts. Torn between loyalty to Data and his duty to Starfleet, Picard once again finds himself fighting for the rights of androids to make their own choices. 

A quasi-sequel to the iconic Season 2 episode "The Measure of A Man" but overshadowed by bigger episodes that sandwiched it, "The Offspring" is an intimate character piece with a classic moral dilemma and an emotional ending, and received renewed attention thanks to its importance to the plot of the first season of "Star Trek: Picard."

19. The Pegasus

Season 7's  "The Pegasus"  begins with the arrival of Admiral Erik Pressman, who happens to be Riker's old captain from the titular starship Pegasus. He comes with new orders for Picard, telling him that the Pegasus wasn't destroyed as had been previously believed, and has been found buried in an asteroid field ... and the Romulans are after it.

It's soon revealed that the Pegasus was once used to test an experimental Federation cloaking device, an act specifically prohibited in the treaty with the Romulans. Commander Riker's loyalty is questioned when he is ordered to keep the secret of the Pegasus, and he's forced to choose between his two captains when the Enterprise falls into a Romulan trap. "Lost" star Terry O'Quinn makes a memorable appearance as Pressman, while Picard and Riker get into some heated exchanges about mortality and integrity that make "The Pegasus" a nail-biter of an episode.

The only pure comedy episode on this list,  "Deja Q"  earns its place as one of the best episodes of "The Next Generation" thanks to the sharp wit and strong performance of John De Lancie, who returns once again to serve as a thorn in Picard's side. As the immortal trickster Q, he arrives on the Enterprise claiming he has lost his god-like powers and has been exiled from his people in the Q Continuum. He asks for a safe haven aboard Picard's ship, which becomes a cry for help when a race of beings shows up to get vengeance on him for tormenting them in the past.

Most of the humor of the episode comes from Q slowly learning the basics of being mortal, from nightly sleep to being hungry to crippling back pain. But "Deja Q" also includes many touching moments involving Data, who somewhat ironically attempts to show Q what it means to be human.

After featuring Spock the previous season, Season 6 dips back into the original "Star Trek" series lore with  "Relics," the episode that brings back Enterprise-A chief engineer Montgomery Scott. Having apparently survived for 75 years by storing himself within his ship's transporter, "Scotty" re-materializes aboard the Enterprise-D during an investigation of a fantastic alien Dyson Sphere and is warmly greeted, but soon begins to feel out of place in the 24th century. When the Enterprise gets trapped inside the Dyson Sphere, it's up to Scotty and his engineering successor, Geordi LaForge, to save them.

Ultimately, the return of Scotty is a touching story about aging and the need to feel useful in an ever-changing world. While the genius former engineer feels that the future has left him behind, he soon discovers that he still has plenty of life left in him, and a lot to offer the 24th century.

16. Ship In A Bottle

A sequel to one of the better Season 2 episodes, the Season 6 follow-up  "Ship In A Bottle"  ties up what might have wound up an unresolved plotline . It begins when a self-aware hologram of Professor James Moriarty — Sherlock Holmes' ultimate nemesis in the stories by Arthur Conan Doyle — appears on the holodeck demanding to see Captain Picard. After Data and Geordi unwittingly gave him sentience in "Elementary, Dear Data," Moriarty's program has been trapped in the holodeck computer for years, and now he wants to leave. But as far as Picard and crew believe, it's simply not scientifically possible.

But Moriarty has a plan and takes control of the ship, threatening to destroy it if his demands aren't met. What follows is a mind-bending "Inception"-style adventure where Moriarity and Picard — with the help of Data and the neurotic recurring character Reginald Barclay — attempt to trick each other with dueling holodeck-within-a-holodeck scenarios that will leave your head spinning.

15. Timescape

Stories that play with time have been a staple of "Star Trek" since the beginning, and time-bending episodes are often among the franchise's best.  "Timescape"  is no exception. Returning to the Enterprise from a science conference, Picard, Geordi, Data, and Troi discover the Enterprise and a Romulan warbird frozen in time, seemingly in the midst of battle. Going aboard, they find the crews frozen, as well — both ships are trapped in a strange anomaly, and any attempt to unfreeze them in time risks killing several members of the Enterprise crew, who are apparently under attack by Romulan soldiers.

When Picard becomes incapacitated, the remaining trio must figure out what's really happening, despite interference from mysterious pair of Romulans who, like them, are able to move freely about the Enterprise. With loads of fun, sci-fi time-altering shenanigans, and its far share of twists, "Timescape" is an episode full of surprises.

Among the most famous episodes of the series,  "Darmok"  may not rank in the top 10, but it comes close. The story sees Captain Picard kidnapped and brought to the surface of an unknown planet along with a ship captain from a species known as the Children of Tama, whose language has proven indecipherable despite the Federation's universal translator technology. Trapped together on the alien world and forced to work together to fight a deadly beast, Picard and his fellow captain find common ground and slowly learn to communicate.

The unusual language structure devised for the episode proved groundbreaking — it's been pointed out that the Tamarian "language" predicted Internet meme culture , and it's even been used to teach college courses . The uniqueness of this language is one of those fascinating concepts that could only be seen in science fiction, and the episode as a whole is quintessentially "Star Trek," with a universal message of friendship, tolerance, and understanding.

13. I, Borg

The compassion of Captain Picard and the crew of the Enterprise is on full display in the Season 5 episode  "I, Borg."  Coming upon the wreckage of a Borg ship, Doctor Crusher convinces the captain to bring the last surviving drone aboard to save his life. But while Picard's intentions are initially less selfless — he hopes to use the drone to destroy the entire collective — he comes around when he realizes that this new Borg is showing signs of personhood, even taking the name Hugh.

An example of the moral and ethical dilemmas often faced in "Star Trek," Picard ultimately abandons his plans for revenge against the Borg and allows Hugh to decide his own fate. Realizing the Borg won't stop looking for him, Hugh returns to the Collective, with the hope being that his sense of individuality will survive and spread. It proves to be one of Picard's best decisions  — Hugh would return later in "The Next Generation," and again in the first season of "Star Trek: Picard."

12. Lower Decks

The story that inspired the modern adult animated comedy of the same name,  "Lower Decks"  was a unique episode of "The Next Generation" that focused on a group of younger officers: Nurse Alyssa Ogawa, Ensign Sam Lavelle, the Vulcan Ensign Taurik, and the Bajoran Ensign Sito Jaxa, who had previously been seen getting into trouble at Starfleet Academy in the Season 5 episode "The First Duty." Now, the young officers are all up for promotions, and as their friendship is tested by their career ambitions, we see the struggles, challenges, and everyday life of the lower-ranking officers serving on the Enterprise.

Meanwhile, Jaxa is confronted by Picard about her troubled past, a prelude to her assignment to a dangerous mission to return a Cardassian defector to his people. A generally upbeat story, "Lower Decks" is a fun detour from the senior bridge crew, but it ends on a surprisingly bittersweet note.

11. Chain Of Command, Pt. II

A darker episode than most on this list,  "Chain Of Command, Pt. II"  concludes a two-part episode that saw Picard kidnapped by the Cardassians on a mission to stop a rumored doomsday weapon. At the mercy of a cunning Cardassian named Gul Madred, he resists and becomes the subject of brutal psychological torture. Over the course of the episode, it becomes clear that while Madred definitely wants to acquire Federation secrets, the thing he wants most of all is to break Picard's spirit.

Meanwhile, on the Enterprise, Jellico is clashing with Commander Riker, who feels his new captain is too controlling. But Riker may also be the only man who can execute Jellico's daring plan to expose the Cardassian plot and save Captain Picard. Picard's defiant shout of "There are four lights!" puts an iconic capper on one of the better late-series episodes.

10. Parallels

Years before Marvel's "Loki," the "Next Generation" Season 7 episode  "Parallels"  put the multiverse front and center when Worf inadvertently passes through a split in the barriers between universes. Moving between them throughout the episode, Worf finds himself in new and different realities: some where Riker is captain, some where he is married to Counselor Troi, and some where the Bajorans are the Federation's greatest enemy. 

Another trippy sci-fi story, most of the fun is in the first half as Worf struggles to figure out what's happening to the world around him as events and people change before his eyes, though the episode also features a daringly ambitious climax. The various windows into what might have been are intriguing, and "Parallels" even takes the opportunity to bring back Wil Wheaton as Wesley Crusher. It also introduces the first spark of romance between Worf and Troi, a sub-plot that would continue through the remainder of the show's final season. 

9. Tapestry

Q has traditionally been a major pain for Picard and other Starfleet captains, but he returns in  "Tapestry"  in the surprising role of benevolent spiritual advisor. Picard is actually killed in the opening moments of the episode, only to greeted by the all-powerful trickster in the apparent afterlife, who offers Picard a chance to relive his past and change moments that he regrets.

Returning to his days as an ensign fresh out of the Academy, Picard hopes to avoid the reckless behavior that got him stabbed through the heart in a bar fight as a young man while also pursuing a romance with one-time friend Marta Batanides. In trying to bring his older wisdom to his younger self, however, he learns that life's mistakes help us to become who we are. A "Star Trek" version of "A Christmas Carol," the heartwarming message of "Tapestry" makes it one of the series' best.

8. All Good Things...

Often voted among  television's best series finales ,  "All Good Things..."  capped off the show's remarkable seven-year run with an epic feature-length episode that saw Picard revisit events in both the future and the past. Harkening back to the series' very first episode, "Encounter at Farpoint," we see Picard once again on trial before the Q Continuum, attempting to prove the value of humanity's existence by piecing together clues to a potentially world-ending mystery in three different time periods.

As Picard struggles to convince three different crews that what's happening is real, he must find answers to a puzzle that stretches back to the dawn of time to save his entire species. Full of drama, action, and emotion, it was just about everything a fan could want in a finale. While the episode would be one of the series' best on its own, it works even better as a final bookend to "The Next Generation."

7. Cause and Effect

  "Cause and Effect"  is a near-perfect science fiction riddle. Opening in the middle of the action, the Enterprise is destroyed in a shocking scene before the opening credits even roll. Coming back from the iconic "Star Trek" music and fanfare, we find the crew is trapped in an endless loop of time that inevitably leads to the ship's destruction, and worse — they have no idea it's happening. Thinking each loop is the first time through, the crew struggles to even realize what's going on, let alone collect the clues to figure out how to stop it before they all blow up yet again.

With the destruction of the Enterprise occurring just before each commercial break, it's a maddening but mind-blowing story that will leave you on the edge of your seat until the very last moments. And don't forget to keep your eyes peeled for a memorable cameo from Frasier himself, Kelsey Grammer.

The fourth episode to feature Q on this list, Season 2 entry  "Q Who"  saw the more sinister aspect of the god-like being, who arrives on the Enterprise and asks to join the crew. Picard, of course, turns him down. Incensed and hoping to prove to Picard that humanity is not ready for what awaits them amongst the stars, Q flings the ship into a distant uncharted region of space. There they encounter, for the first time, the mysterious race of cybernetic beings known as the Borg. They also learn that Ten Forward bartender Guinan is already familiar with the hostile hive mind, which annihilated her home world.

An important episode in the series, and "Star Trek" as a whole, it's also one of the best — a well-paced thriller that has Picard at first hoping to prove Q wrong and attempting to make peace with the Borg, but ending with an ominous warning that foreshadows not one but two of our remaining entries.

5. The Measure Of A Man

A landmark episode that has been analyzed by  legal scholars , Season 2 standout  "The Measure Of A Man"  puts android Commander Data in the spotlight when a brilliant cyberneticist named Bruce Maddox arrives and wants to disassemble him so he can recreate his positronic brain. Data doesn't approve of the risky procedure, but Maddox states that Data is the property of Starfleet and cannot decline. Picard fights back against this notion and demands a hearing so that he can defend Data's rights. However, the hearing takes place at a poorly-staffed starbase, and Commander Riker is forced to act as prosecutor against Data, despite his personal feelings for his fellow officer.

One of the franchise's best examination of ethics and human rights, it's also one of its most important, as "The Measure of a Man" explores issues that would be revisited again in many future episodes, both in "The Next Generation" and other "Trek" spin-off series. Maddox would even return in the first season of "Star Trek: Picard" in a quasi-sequel that explores the fallout from the work of Noonian Soong, Data's creator.

4. Yesterday's Enterprise

"Yesterday's Enterprise" takes place in a darker alternate timeline created when the Enterprise-C, predecessor to the ship captained by Picard, finds itself thrust 22 years forward in time. Without its sacrifice at a crucial moment in the past, all of history was altered, and now Picard's Enterprise is a warship, with the Federation engaged in a bitter conflict with the Klingons — and on the verge of defeat.

But the arrival of the Enterprise-C adds new complications to an impending Klingon attack, and when Picard learns that the war was never supposed to happen, he struggles with the decision to send it and its crew back to their proper time to face certain death. The episode that saw the return of long-departed cast member Denise Crosby as Tasha Yar, it's an important piece of "Next Generation" lore, and possibly the best alternate reality episode in the entire franchise. 

3. The Best Of Both Worlds, Pt. II

Opening up Season 4,  "The Best Of Both Worlds, Pt. II"  is the thrilling second part of  one of television history's best cliffhangers . The previous episode had ended with Commander Riker giving the order to open fire on the Borg cube that held Locutus — the assimilated Borg drone that had once been Captain Picard. Audiences who had waited all summer for the attack tuned in to see the cube survive unharmed, and Riker and the Enterprise helpless as the Borg launch a direct assault on Earth.

After Starfleet loses a devastating battle with the Borg at Wolf 359, it's up to Riker to devise a bold last-ditch plan to rescue Picard and save Earth from assimilation. The series' most gripping season conclusion, it's an episode that "Star Trek" has still never been able to match in terms of sheer anticipation and excitement.

2. The Best Of Both Worlds, Pt. I

As a stunning season finale and the first cliff-hanger of the franchise, "The Best Of Both Worlds, Pt. 1"  could rightfully be credited as the episode that turned "The Next Generation" into a genuine pop culture phenomenon. Discovering a Federation colony decimated in the same manner as the alien civilization they found destroyed by the Borg in "Q Who," Picard alerts Starfleet that a confrontation may be near. Admiral Hanson arrives with a new officer, Lieutenant Commander Shelby, to help with the crisis. 

The ambitious Shelby adds an interesting layer in what turns out to be a Riker-focused episode, as the title refers to Riker's struggles with whether to leave the Enterprise to become a captain of a lesser ship, or stay and remain Picard's first officer. When his captain is abducted by the Borg and declared lost, Riker gets the best of both worlds — at the cost of Jean-Luc Picard.

1. The Inner Light

"The Inner Light" isn't just the best "Next Generation" episode — there's an argument to be made that it's the best "Star Trek" episode, period . The story begins when the Enterprise comes upon an alien probe that zaps Picard unconscious right off the bat. The captain awakens on an alien world, in another life. Here on the planet Kataan, in the community called Ressik, Picard is a man named Kamin, with a wife named Eline. After giving up on ever finding the Enterprise, which seems to have been just a dream, Picard settles into his new life, even having children and grandchildren, all while Kataan is slowly dying of drought.

Now an old man nearing death, Picard learns that the probe was a messenger that carried memories of a long-dead civilization, and wakes up on the Enterprise having experienced an entire lifetime over the course of a few minutes. An example of what made "The Next Generation" so special, the episode's message of love, hope, and family help it remain one of the most beloved pieces of television ever conceived.

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Published Apr 24, 2024

Stuck in a Loop: The Best of Star Trek's Time-Jumping Episodes

From The Next Generation to Discovery, going around and around is sometimes very revealing.

StarTrek.com

In the Star Trek: Discovery Season 5 episode, " Face the Strange ," Captain Burnham and Commander Rayner find themselves both stuck in a loop, but also, jumping all around the timeline of the titular starship. From the point before the U.S.S. Discovery was launched, to pivotal moments in Season 4, Season 3, Season 2 and even very early in Season 1, Rayner notes at one point that, "We’ve gone back in time to when you went forward to the future. That’s a little confusing."

Throughout all of Star Trek 's history, time travel has been just as propulsive to the narratives as space travel. But, within the various time travel stories of Trek , there is a special kind of time-skipping episode — the time loop story. Discovery has recently shaken-up this formula with "Face the Strange," but many elements of this episode pay homage to a proud Star Trek tradition. Here’s the history of the best time loop, and time-jumping episodes across the entire Final Frontier.

" Cause and Effect ," Star Trek: The Next Generation (Season 5, Episode 18)

"Cause and Effect"

Perhaps one of the greatest science fiction episodes of all time, The Next Generation set the gold-standard for how to do time loop episodes.

When the Enterprise collides with another starship in the first scene, this episode poses one question right off the bat: What happens after you blow up the ship — and everyone on it — before the credits roll? The answer is mostly connected to whether or not we can even remember when we're stuck in a loop. Without actually spoiling this classic episode, let's just say thank the stars for Dr. Crusher and Data.

The brilliance of "Cause and Effect" cannot be overstated, but the 21st Century legacy of this episode is utterly appropriate. When Geordi reveals how the time loop works, Riker says, "You mean we could have come into this room, sat at this table and had this conversation a dozen times already?" This scene has become a popular meme format across various social media platforms, satirizing the time loop of some aspects of the internet experience.

" Parallels ," Star Trek: The Next Generation (Season 7, Episode 11)

"Parallels"

Arguably, when Worf starts slipping between realities in "Parallels," the story is more focused on other dimensions, rather than a true time loop. But, each time he pops into a new reality, Worf does tend to reply to his own personal log, which is what began the episode.

Obviously, in each new timeline, Worf's personal log is different, and because he checks it so often in the episode, this gives "Parallels" the feeling of a time loop story, even though Worf is technically moving both forward in time, and also, side-to-side.

On top of all of this, "Parallels" feels time-loopy because so many ideas and plot points from previous seasons of The Next Generation are revisited here. From references to " The Best of Both Worlds ," to the return of Wesley Crusher, "Parallels" brings all the good things of TNG back around again for another look, from a different point of view.

" All Good Things... ," Star Trek: The Next Generation (Season 7, Episode 25)

"All Good Things..."

Speaking of the best of The Next Generation , the immortal series finale is, from a certain point of view, one big time loop. As Jean-Luc Picard shifts between past, present, and future, the biggest mystery of "All Good Things…" is what caused the anomaly in the Devron system? Eventually, we learn that the ending and the beginning of this story are inextricably connected, a paradox that creates a kind of loop that must be broken.

Twenty-nine years later, in the Star Trek: Picard episode, " Imposters ," Captain Liam Shaw references this moment, and notes that Picard and Riker have a "real chicken and egg thing going on." It doesn’t get any more time-loopy than that!

" Visionary ," Star Trek: Deep Space Nine (Season 3, Episode 17)

"Visionary"

When O'Brien starts seeing another version of himself appearing randomly throughout the station, Dr. Bashir briefly floats the idea that he's just having really boring hallucinations. But, as the episode goes on, it becomes clear that O'Brien is actually seeing brief moments in the future, and then, catching up to those moments in the present.

"Visionary" messes with what we expect from a time loop episode, because in all instances of future occurrences, there are literally two O'Briens present, and, when the past O'Brien catches up to the future moment, the duplication effect happens again, creating a kind of visual loop for the audience. The funny thing is, in several instances, the future doesn't play out exactly the way past O'Brien saw the first time, making this one of the wobblier time loops in all of Star Trek .

" Relativity ," Star Trek: Voyager (Season 5, Episode 24)

"Relativity"

In a move very similar to Discovery 's "Face the Strange," this unforgettable episode of Voyager briefly takes us back to a point before the series even begins, showing us Janeway's first moments on Voyager before the ship left the Utopia Planitia Shipyards on Mars. (In "Face the Strange," Burnham and Rayner see Discovery in a drydock on Earth well before the events of Season 1.)

But, Voyager 's jaunt into its own prehistory is just the beginning of a very specific type of time jumping episode. Here, Seven of Nine isn't exactly repeating a loop, but, making several attempts at different times, to prevent a bomb from destroying Voyager . As Tuvok aptly puts it when encountering one version of Seven from the future, "Like many time paradoxes, it's improbable, but not necessarily illogical." Because this episode features multiple versions of Seven, and leaps to various eras of Voyager , it pairs very nicely with Burnham and Rayner's similar jumps in "Face the Strange." Especially the moment where Seven meets herself.

" Shattered ," Star Trek: Voyager (Season 7, Episode 11)

"Shattered"

Does Voyager have the best timey-wimey episodes in all of the Trek franchise? It's hard to say, but if there's another Trek episode that feels like an older sibling of Discovery 's "Face the Strange," it's almost certainly "Shattered," a fan-favorite episode from Voyager 's final season. Here, the captain and the first officer — Janeway and Chakotay — find themselves on a version of the ship that has been split into different time periods.

"Shattered" is one of Star Trek 's greatest retrospective episodes, touching on moments across all of Voyager 's story, and teaming past versions of characters with ones closer to the present. It's a touching story, and, structurally, it's wonderfully homaged in Discovery .

" Magic to Make the Sanest Man Go Mad ," Star Trek: Discovery (Season 1, Episode 7)

"Magic to Make the Sanest Man Go Mad"

One of Discovery 's stand-out moments from Season 1 fully set the stage for "Face the Strange" in Season 5. In "Magic to Make The Sanest Man Go Mad," Harry Mudd sets the ship on a true time loop, in which only Stamets can truly remember what is going on. Like in "Face the Strange," Stamets has a perception that exists outside of time, thanks to taking on the Tardigrade DNA in "Choose Your Pain."

This detail comes in handy in "Face the Strange," where Burnham and Stamets again have to re-team to get Discovery out of a time loop caused by nefarious enemies using time travel technology as a weapon. In Season 1, Burnham and Stamets barely knew each other, much like Burnham and Rayner's relationship in Season 5. But, if there's one thing a time loop or time-jumping episode can do, it’s make people who are just colleagues into best friends for life.

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Ryan Britt is the author of the nonfiction books Phasers on Stun! How the Making and Remaking of Star Trek Changed the World (2022), The Spice Must Flow: The Journey of Dune from Cult Novels to Visionary Sci-Fi Movies (2023), and the essay collection Luke Skywalker Can’t Read (2015). He is a longtime contributor to Star Trek.com and his writing regularly appears with Inverse, Den of Geek!, Esquire and elsewhere. He lives in Portland, Maine with his family.

Star Trek: Discovery Seasons 1-4 are streaming exclusively on Paramount+ in the U.S., the UK, Canada, Switzerland, South Korea, Latin America, Germany, France, Italy, Australia and Austria. Seasons 2 and 3 also are available on the Pluto TV “Star Trek” channel in Switzerland, Germany and Austria. The series streams on Super Drama in Japan, TVNZ in New Zealand, and SkyShowtime in Spain, Portugal, Poland, The Nordics, The Netherlands, and Central and Eastern Europe and also airs on Cosmote TV in Greece. The series is distributed by Paramount Global Content Distribution.

• April 29, 2024 | Preview ‘Star Trek: Discovery’ Episode 506 With New Images. Trailer And Clip From “Whistlespeak”
• April 28, 2024 | Interview: ‘Star Trek: Discovery’ Writer Carlos Cisco On Unmasking The Breen And Revisiting The ISS Enterprise
• April 26, 2024 | Michael Dorn Wanted Armin Shimerman To Play The Ferengi That Worf Killed In Star Trek Picard
• April 26, 2024 | Podcast: All Access Gets To Know The Breen In ‘Star Trek: Discovery’ 505, “Mirrors”
• April 25, 2024 | Prep Begins For ‘Star Trek: Strange New Worlds’ Season 3 Finale; Cast And Directors Share BTS Images

Interview: ‘Star Trek: Discovery’ Writer Carlos Cisco On Unmasking The Breen And Revisiting The ISS Enterprise

| April 28, 2024 | By: Anthony Pascale 29 comments so far

The fifth episode (“ Mirrors “) of season 5 of Star Trek: Discovery was co-written by Carlos Cisco, working with Johanna Lee. Cisco joined Discovery in season 3 as a writers’ assistant, moved up to staff writer during season 4, and is now a writer and story editor in season 5.

In our SPOILERS interview, TrekMovie had a chance to talk to Cisco about getting a chance to expand on some big pieces of Trek lore in “Mirrors” and more.

Can you give a bit of background on your fandom and how you came to work on Discovery ?

I am a huge fan now, but I wasn’t always that way because I didn’t have TV growing up in the ’90s. I had seen some of the original movies, a handful of Next Gen episodes and the J.J. Abrams movies before coming onto Discovery . It was intimidating because didn’t know the franchise really well but I love sci-fi and genre. Once I started on season 3, I began to watch Next Gen episodes and when it became clear we were dealing with Andorians and Orions, our then-staff writer Brandon Schultz suggested I watch Enterprise because that is when they were the most featured and I really came to appreciate it. I had been a huge fan of Jeffrey Combs before any knowledge of Trek, and to find how deep he was in Trek was a delightful surprise. So I watched Enterprise all the way through, I watched all of Next Gen , DS9, TOS, I got up to season 4 of Voyager …

So you did an almost complete binge of the franchise during your first year as a writers’ assistant?

Yeah, I was watching like two to four episodes a day. It was a lot. I am an extremely online person and understand how fandoms work and understand that Trek is the fandom that created the sort of framework for all modern fandom. I also love researching things. I love fake histories of and diving into the lore of something. So yeah, I went through all of it and eventually finished up Voyager during the pandemic and kept on, I am current with all the Trek shows.

Was this just extra obsessiveness because it was your job, or because you were you getting into it?

I really enjoyed Next Generation . Deep Space Nine is among my favorite TV series of all time and the one I go back and rewatch the most because it’s just that good, I love it. I will go back to other ones like if we are referencing it in the room.

Carlos Cisco beamed to the set of Star Trek: Discovery

So having watched it all so recently, did you find yourself as one of the quasi-experts in the room?

Yeah. I would have upper level writers texting me asking like, “What’s something I can inject in here?” Yeah, I became one of the experts in the room. I feel like the most passionate people about a religion are the recent converts, and that became one of my positions in the room. So I was always trying to push how could we recontextualize Trek canon for the 32nd century? How can we better worldbuild each season? That was something that was important to me.

For an episode like “Mirrors,” it must occur to you that you are about to double the page on Memory Alpha for the Breen and also the Kelleruns and even the Mirror Universe. Do you find that exciting or terrifying?

Both. Trek fans, they know their shit. It’s a really terrifying and great responsibility to get to be that additive to canon. The Breen were one of my strongest pushes for the season. Early on a couple of us who were really into the lore were asked for ideas on the season big bads and [staff writer] Eric [Robbins] was pushing for the Vidiians and I was like we should do the Breen.” Because, A: They’re not going to have horrible makeup, and B: We can just put a bunch of big guys in suits and they don’t need to talk. Being mindful of the COVID protocols, the suits and masks would be really great. And then there were all the possibilities for the Breen because in every season Discovery is trying to do something we have never seen before. And getting to unmask the Breen was a really big privilege.

“Mirrors” showed how there was more to just unmasking them with the two faces. Can you talk about the look and inspiration behind that?

I don’t remember where in the process we landed on “gelatinous” but when we hit the art team with that they came back to us with deep sea fish like the Barreleye Fish with a see-through head. We got really excited about that. So we started talking about what is this species? Why do they wear the suits? So, the thing we landed on is they have this soft gelatinous form and also a hardened form. Our thinking was that the Breen came up on a very harsh planet with a harsh environment. So they developed a way to protect themselves which was hardening their outer shell into basically a skin, but that takes an immense amount of concentration and energy, making them slower, more sluggish, less intelligent, basically. Over time, they compensated for that by creating the refrigeration suits. Then culturally, it became anathema for them to display that solid face, especially to outsiders, because it was essentially a sign of weakness.

L’ak in his gelatinous state

This idea of a taboo reminded me of episodes like “The Outcast.” So L’ak is part of a segment of Breen society that chose to go against this norm?

Yeah, I think that the Breen that would do that would be outcasts in their society. We still wanted to leave a lot of mystery with the Breen. One of the most appealing parts of being a writer in Trek, is you can see something that was mentioned once in Trek and go, “I’m going to build a whole episode about this, or a whole character arc that explores this.” The Breen started as a single line in TNG and then got one of the most important arcs in DS9. Getting to build and expand off that of that was really cool.

One quick question: Is this the same Breen ship we saw next to the destroyed Federation HQ in the future in the time travel episode?

Yep, that big honking thing next to Federation HQ is the Breen ship. It’s not a space station, it’s a ship. That was one of the things I was super proud of pitching. I had been looking at Breen ship designs, including the Star Trek Online ones, which were these colossal, city ships that could house entire armies and fleets inside of them. And again, talking about what haven’t we seen and what could we have as our adversary. Like, Osyraa’s ship was big in comparison to Discovery, but we wanted to do something – this thing was just a behemoth. Like a Discovery-sized ship could fly into its shuttle bay.

Using the ISS Enterprise was a way to sort of visit the Mirror Universe again. What came first: a creative way of using the available Strange New Worlds set in Toronto, or the decision to revisit the Mirror Universe?

We were given access the sets so we could pitch ideas that could take place on those sets, whether it is the Enterprise or not. There were a few pitches, like one with an old science vessel from the 23 rd century stuck inside a planet of liquid mercury. And one pitch was it was a Mirror Universe ship sort of trapped like a ship in a bottle, which became the pocket of dimensional space. We even considered fluidic space, trying to bring in one more little reference [laughs]. So once it was settled to do the Mirror ship, the opportunity to define what happened to the ISS Enterprise after the events of “Mirror, Mirror” was really cool.

Was there any talk about also bringing in some Mirror characters?

We had considered Ethan [Peck] as Mirror Spock early on but there might have been availability issues, I don’t know.

Burnham and Book on the ISS Enterprise bridge

So you say you are the lore guy, so how about a nitpick speed round? Starting with: The Breen aren’t supposed to bleed, right?

They don’t have a circulatory system, it’s just the jelly spilling out. I know they don’t bleed! Come on. [laughs]

The solution to open the wormhole was to replace the photon torpedoes with antimatter, but aren’t photon torpedoes anti-matter torpedoes?

I think they were adding more, okay? [laughs]

Final sort of nitpick: Owo and Detmer were tasked with taking the ship back to HQ, but the warp drive was disabled.  We don’t see it go to warp, so are they not going to show up at HQ for years?

In my headcanon, they are being met by a Federation tug, the 32 nd century version of the California-class like the Cerritos. They are heading off to meet them and it will tug them to spacedock. [laughs]

ISS Enterprise leaves for Starfleet HQ

We have talked a lot about lore, but season 3 was a way for the show to kind of jump past all of Star Trek canon. Now in season 5, it feels like the show is reembracing the lore, is that by design?

Yeah, I think the studio and Secret Hideout, [co-showrunners] Alex [Kurtzman] and Michelle [Paradise] all wanted this season to sort of connect Discovery back to the greater body of Trek a little more. That didn’t mean we had to really dig into canon, but there was a greater desire to see what we are familiar with from the past and what it looks like in 32 nd century and how it’s different or how it’s not different, and why. Obviously, this is a season that has focused on an episode from the 24 th century [TNG “The Chase”] and so naturally because of that, every episode focused on the clues is going to be focused on the whims of a 24th-century scientist. So that is naturally going to have more connections back to what people would consider classic Trek.

Discovery is ending and the writers room wrapped up a while ago. Are you hoping to return to the franchise? If there is a second season of Academy , are you hoping to get back to the 32 nd century?

I’d love to, if they’d have me. But if this is the last episode I get to write of Star Trek, I’m very proud that this is my final contribution. I’m hoping to pitch some games to the franchise and stuff like that as well down the line. I’m a game designer on the other side of my career. But yeah, I would love to come back and write for Trek, anytime. We’ll see if that happens.

Finally, last year you played a big part in organizing for the WGA strike, which included rallying Trek writers. Can you talk about that?

Yeah, one of the proudest things I’ve contributed to the franchise didn’t even take place while I was employed on Star Trek. Or [employed] at all. I was a lot coordinator and strike captain. Followers of the strike might remember we did theme days to boost morale and turnout. I, along with fellow captain and Strange New Worlds writer Bill Wolkoff was one of the architects of the Star Trek strike day in May. It was one of the first theme days, and we didn’t advertise. But the turnout from franchise was immense. We had actors, writers, and designers from every single Trek TV show attend. It was, as a fan and a writer, an immensely emotional day and an incredible few hours where folks who worked on the show could fan out on other folks whose shoulders we stand on. There were reunions that hadn’t happened in years and it was a really joyful celebration of the shows we all put our blood, sweat, and tears into.

Carlos Cisco (highlighted) at Star Trek-themed picket day in May 2023 (Photo: JW Hendricks)

The fifth and final season of Discovery debuted with two episodes on Thursday, April 4 exclusively on Paramount+  in the U.S., the UK, Switzerland, South Korea, Latin America, Germany, France, Italy, Australia, and Austria.  Discovery also premiered on April 4 on Paramount+ in Canada and will be broadcast on Bell Media’s CTV Sci-Fi Channel in Canada. The rest of the 10-episode final season is available to stream weekly on Thursdays. Season 5 debuted on SkyShowtime in select European countries on April 5.

Note: The interview has  been edited for brevity and clarity.  

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I’m not sure I like the reveal. To me, this is one of those things like the Klingon headridges where I think the mystery was more interesting than the answer they came up with. I so wish Enterprise had not explained the headridges and Worf’s “we don’t discuss it with outsiders” joke in DS9’s “Trials and Tribbleations” was the end-all be-all for it.

Also, the behind-the-scenes thinking and explanation for the Breen doesn’t fit with DS9.

Their idea that the Breen come from a harsh planet and harsh environment is directly conflicted in dialogue by Weyoun, who states the environment of the Breen homeworld is actually normal. In DS9, it gave the Breen a mysterious quality that I think made them stand out.

Good point. Pretty much everything about this episode was badly done.

Frankly, given what a disappointment Discovery seasons 3-5 have been, I truly hope Carlos Cisco and Johanna Lee are not invited back. They just aren’t good writers.

as all Disco writers are…

You dislike all the writers on all current trek shows. Not actually sure what you consider a “good” writer.

Just to be sure, it would be nice if we can put all Disco writers in one big box and ship them to Antartica.

DS9 built up a real mystique about the Breen. To find out that they are really green jello people was a bit anti-climatic.

but on the other hand, who trusts anything Weyoun says?

The Typhon Pact books dug into the Breen in an interesting way, and this doesn’t stray too far from that (in some respects) which is refreshing to see.

Two unnecessary reveals in one episode.

Anyone who says DS9 is their favorite show is already alright in my book!

However I did have a lot of problems with this episode. The whole MU connection and it also being the Enterprise just felt beyond a stretch and very unnecessary. And he confirmed what I think a lot of us assumed and that they were able to use the Enterprise sets and just came up with a story around it instead of the opposite and came up with a story first that warranted it. I really wish it was just another Constitution class ship from the prime universe instead of the ham fisted stuff they came up with that added really nothing to the story.

As for the Breen I do like they are using them again since this is a species many fans wanted to see again. I’m torn with the head reveal but OK with it. But would’ve been fine if they didn’t show them.

I also like the idea of using the Vidians too although IIRC weren’t they already cured by the end of Voyager? But this is why it’s fun to go so forward in the future because now you can use species from any part of the galaxy.

And I suspect we will see a lot more of them in the Academy show.

Agreed on all fronts.

agree on everything ;)

Yeah, I don’t think every mystery or open question needs to be answered by our franchises. I don’t understand the compulsion to answer every open question from past series or movies.

Things like the Breen and Bobba Fett were cooler with less said.

yes. for sure. let the secrets be secrets, don’t explain them, create new ones!

The shame of it all, though, is that this just wasn’t a good episode. It was badly written, L’ak and Moll were really boring, and the Breen’s other face was cheesy-looking. This may have been the worst episode of DISCO since the ship left the 23rd century. What a disappointment this season has turned out to be; after two really fun opening episodes, it’s gone downhill fast and has turned into the same padded schlock that was seasons three and four.

You literally complained about the first two episodes when they aired and now you are saying that were great? And you’re making sweeping judgements about a season being disappointing even though you haven’t seen it all? There’s a word for this: trolling.

That’s nonsense, and you know it. I don’t know why you have a bug up your butt about me, but if you don’t like my posts, stop replying to them. I’m clearly not a troll. I’ve been an active member of this group for years.

Also, I just looked up my comments about the early episodes on this board.

Episode 1: “Now THAT was good.”

Episode 2: I made no comment at all.

Episode 3: “Oh, boy. After two stellar episodes, this was one of the worst in the show’s history. If this is setting the tone for the rest of the season, I’m frankly worried.”

So, M1701, when exactly did I “literally complain about the first two episodes when they aired?” It’s pretty clear which one of us is the troll. So get off my back. You don’t out-rank me and you don’t have pointed ears.

I don’t know. I thought it was a very good episode. The pacing was great. I like the added backstory to Moll and L’ak. I found it added depth and meaning to their characters. And I did love that the MU ship was the Enterprise. As a long-time fan of Trek and loving “Mirror, Mirror” – I often wondered what happened to the ISS-E. This was quite satisfying to me to know where she ended up. Being a writer myself (I wrote several episodes or ARE YOU AFRAID OF THE DARK and other series from time to time), I quite enjoyed the story telling here and in this season. I work more in the technical field now but I still write from time to time. Funny enough, I did write a fan fiction years and years ago that find the ISS-E in the future with Mirror Spock at the helm.

Oh neat I used to watch AYOTD when I was a kid good show.

This awful story is what you get when you assign a novice to write this episode. No offense to Carlos Cisco, but the ‘Mirrors’ episode is a huge mess.

The ‘no offense’ made a huge difference indeed… LOL

What they should’ve done with the extra pages they got in the end (to wrap up the series) is go back and ‘fix’ certain things they would’ve done, had they known it was their last episode. Like bringing in Ethan for at least a cameo or recorded log scene and Lorca in the previous one. Would’ve fixed the ‘talk in stead of show’ issues.

Guess we can add the Breen to the list of things the First Splinter did better (a list that already includes the MU).

I still hate the 32rd century, the entire thing completely destroys world building in the Star Trek Universe to me.

If it was the late 25th century or early 26th century, just a difference in Number really, the jump in tech capabilities would be entirely reasonable and no more than from the late 23rd to the late 24th century. All of the things that happened in the meantime, the burn, the reunification of vulcan etc would have all been much more plausible in a shorter period of time and honestly opening the possibility for many more interesting stories to tell. Even the federation continuing on as a shadow of its former self, the way it is presented in the show, would make much more sense if the burn had been just, say, 30 years ago – and not over 100!

Look at how our real world changed just within the last 80 years since WW2, how a society such as Korea could evolve into two completely different cultures, how entire populations were displaced in Europe, yet that reality became totally normal now. In star trek, on the other hand, somehow progress and change completely ground to a crawl, apparently, following the 2400s.

Again, that baffling decision completely destroys world building and plausibility of the events in Disco for me. Such a minor thing as the number of the date has have such profound ramnifications towards the plausibility of the story (which was probably only chose because it was beyond ANY mentioned events in Canon) and it is just so disappointing that this decision has been apparently been made on a whim.

And now they are doubling down with SF Academy. Just leave it in peace and call it an “alternate Timeline/split timeline” or whatever.

This. I just can’t even bring myself to watch Disco anymore (stopped after season 2). Have seen every episode of every other series excluding Prodigy (am getting to that one), but Disco just doesn’t feel like the same universe, and I’m simply not interested.

This episode was damn fantastic and I find Trekmovie’s comments section for this article a bit more wearying than most.

Ah, thank you. The comments here are becoming grumpy central. I liked the episode and this interview was honest and fun.

I liked that TNG mostly didn’t revisit TOS aliens (but when it did, it overused them – see: Klingons — or made them lame – see: Vulcans and Romulans).

I wish Discovery had tried to do its own thing.

Star Trek: Best Book-Only Characters

• The Star Trek novels introduce unique characters like Akaar and Treir, adding depth to the expansive Starfleet universe.
• Characters like Nick Keller and Elias Vaughn bring new perspectives to the post- DS9 era, facing challenging galactic events.
• Mackenzie Calhoun leads the USS Excalibur in a new hero ship series, showcasing tactical genius in the New Frontier books.

Just like the universe itself, the Star Trek franchise is huge and far-reaching, encompassing several television shows, and numerous video games, movies, and books. While many of Star Trek 's most iconic characters appear in various series and films, there are many other great characters who only feature in alternative media sources. For instance, the final frontier has spawned some memorable video game-based characters .

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Yet perhaps the richest source of characters is the now questionably canon series of books that take place following The Next Generation and Deep Space Nine . From fresh takes on classic species like the Andorians and Orions, to some of Starfleet's finest officers, the Star Trek novels are a treasure trove of notable figures.

Leonard James Akaar

First appearence: star trek mission gamma book one: twilight.

• Author: David R. George III
• Publication Date: September 2002

Leonard James Akaar is unique among novel-only characters in that he does, in fact, make a blink-and-you'll-miss-it appearance on televised Trek . "Friday's Child," an episode of The Original Series , ends with his birth; however, the Capellan royal would not be seriously fleshed out until 2002's Mission Gamma: Twilight . By the time of the Deep Space 9 novels, Akaar had risen through the ranks of Starfleet to become an influential admiral with the ear of the Federation president.

Akaar's strategic mindset and steely resolve proved essential in preserving the Federation through some of its darkest periods, including the Borg invasion depicted in the Star Trek: Destiny series. The Starfleet legend may have been born in The Original Series , but the Star Trek novels were where he made his name.

First Appearence: Star Trek: Demons of Air and Darkness

• Author: Keith R. A. DeCandido
• Publication Date: September 2001

Star Trek features many inspirational female characters, from Kira Nerys to Katherine Janeway. However, few are as resourceful or as motivated as Treir , an Orion Dabo girl who transformed Quark's Bar into a highly successful business during the post- DS9 novels. Following her escape from Orion servitude, Treir earned her place as Quark's right-hand woman by implementing a series of radical reforms, including hiring a Dabo boy to attract more customers.

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Treir may not play a significant role in the canon-shattering events depicted in the Deep Space 9 novels, but this ruthless businesswoman helped to make Star Trek 's prose universe feel like a living, breathing place. If anyone is capable of giving Quark a run for his latinum, it's her.

Nick Keller

First appearence: star trek new earth: challenger.

• Author: Diane Carey
• Publication Date: August 2000

New Earth , a series of six novels that take place between Star Trek: The Motion Picture and The Wrath of Khan , was intended to act as a backdoor pilot for a new narrative focusing on Commander Nick Keller . In the final novel, Keller takes command of a makeshift starship in order to defend the human colony of Belle Terre from alien attack. Keller was conflicted between overthrowing his inept captain and preserving the lives of his comrades, and it's a great shame that a full series based on the space cowboy's adventures never emerged.

Interestingly, author Diane Carey based Keller's appearance on Scott Bakula, who would go on to play Captain Jonathan Archer in Star Trek: Enterprise . Keller, however, would make only two more appearances in the Star Trek universe, with both being part of the multi-series Gateways crossover event.

Elias Vaughn

First appearence: star trek: avatar (book one).

• Author: S. D. Perry
• Publication Date: July 2001

Elias Vaughn was a Starfleet officer and intelligence operative who joined Deep Space 9's command staff following the end of the Dominion War . Despite only holding the rank of commander, Vaughn's expertise proved a boon to the Federation outpost, and he played a role in several key events, including the USS Defiant 's post-war exploration of the Gamma Quadrant (depicted in the Mission Gamma sub-series).

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Vaughn was haunted by the death of his wife, Ruriko, and his troubled relationship with his estranged daughter, Prynn. This relationship was complicated by the fact that Prynn was also assigned to Deep Space 9. However, father and daughter were eventually able to reconcile–but not without some bumps along the way.

Christine Vale

First appearence: star trek: the belly of the beast.

• Author: Dean Wesley Smith

While William Riker's USS Titan has made notable appearances in Star Trek: Lower Decks , the starship's adventures were originally chronicled in a series of spin-off novels. These books featured Christine Vale , a former detective turned Starfleet officer, as Riker's second-in-command. Vale was initially unwilling to take the post, as she disliked the idea of Riker working so closely with his wife, Deanna Troi.

Luckily, Vale took the post, which allowed her to act as a counterweight to any of Riker's Troi-related biases. During her time aboard the USS Titan , she helped to explore the Beta Quadrant and fend off a Borg invasion. Indeed, her record was so good that, following Riker's promotion to admiral, she took command of the Luna -class starship.

Thirishar ch'Thane

From their initial appearance in 1967's "Journey to Babel" and 2001's "The Andorian Incident," references to Star Trek 's Andorians were true and far between. One important detail was disclosed in The Next Generation , however: Andorians have four sexes , with all four required for successful reproduction.

The character of Thirishar ch'Thane (or "Shar") was a response to this premise. Shar served as Deep Space Nine's science officer following the end of the Dominion War, but was torn between his commitments to Starfleet and to his mating group, who wished him to return to Andor. This dilemma was further complicated by a dangerous decline in Andorian fertility, which threatened to cause the Andorians' extinction in the long term. Shar was eventually able to use his scientific knowledge to help solve the Andorian fertility crisis.

The Jem'Hadar are one of Star Trek 's most iconic creations , a powerful race of warriors motivated by their addiction to the chemical ketracel-white. During the Dominion War of 2373–2375, the Jem'Hadar were central to the Dominion assaults which nearly overwhelmed the Federation Alliance.

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After the war's conclusion, Taran'atar , a Jem'Hadar without a ketracel-white dependency, was sent to Deep Space Nine as a cultural observer. Taran'atar's struggle to adjust to the Alpha Quadrant during peacetime makes for fascinating reading, as does seeing the fearsome warrior growing closer to his former enemies. Taran'atar's story takes some strange twists and turns, but he remains a fascinating character.

Mackenzie Calhoun

First appearence: star trek new frontier: house of cards.

• Author: Peter David
• Publication Date: July 1997

In 1997, Pocket Books published the first of Peter David's New Frontier books. While these novels included several characters from TV Trek (mostly notably Commander Shelby from "The Best of Both Worlds" ), they focused on a new hero ship, the USS Excalibur , and a new captain: Mackenzie Calhoun . Calhoun, an alien warrior modeled after Mel Gibson, was depicted as a tactical genius capable of beating Starfleet's toughest challenges–including the infamous Kobayashi Maru test.

Calhoun soon became a fan-favorite, with his New Frontier series including over 20 volumes. The Xenanian captain was even popular enough to be made into an action figure, the only example of this honor being bestowed on a character originating from any of Star Trek 's novels.

Created by Gene Roddenberry

First Film Star Trek: The Motion Picture

Latest Film Star Trek Beyond

First TV Show Star Trek: The Original Series

Latest TV Show Star Trek: Strange New Worlds

Creation Year 1966

Screen Rant

Mirror universe spock’s fate in star trek: discovery explained.

Star Trek: Discovery filled in some of the gaps in Mirror Universe history and revealed the fate of Spock after Star Trek: TOS" "Mirror, Mirror."

Warning: SPOILERS for Star Trek: Discovery Season 5, Episode 5 - "Mirrors"

• Mirror Universe Spock's death led to a revolution in the Terran Empire, but ultimately couldn't prevent its downfall.
• The ISS Enterprise became a symbol of hope in the Mirror Universe, with rebels seeking freedom in the Prime Universe.
• Dr. Cho, a refugee from the Mirror Universe, rose to become a Branch Admiral in Starfleet, shaping her own future.

Star Trek: Discovery confirmed the fate of Mirror Universe Spock (Leonard Nimoy) after the events of the classic Star Trek: The Original Series episode, "Mirror, Mirror." Since its first appearance on TOS, several Star Trek series have visited the Mirror Universe, a parallel universe populated by evil versions of Star Trek's heroes. In the Mirror Universe, the xenophobic Terran Empire serves as the antithesis to the United Federation of Planets, and torture and murder are commonplace. Captain Michael Burnham (Sonequa Martin-Green) and the USS Discovery are already familiar with the Mirror Universe, as they spent some time there in Discovery season 1.

In Star Trek: Discovery season 5, episode 5 , "Mirrors," Captain Burnham and Cleveland Booker (David Ajala) follow couriers Moll (Eve Harlow) and L'ak (Elias Toufexis) into interdimensional space in search of the next clue leading to the Progenitors' treasure. Once there, they find the damaged ISS Enterprise, which holds clues about the fate of Mirror Universe Spock and his crew. In Star Trek: The Original Series season 2, episode 4, "Mirror, Mirror," Captain James T. Kirk (William Shatner) encourages Mirror Spock to initiate change, telling him: "In every revolution, there's one man with a vision." Written by Johanna Lee and Carlos Cisco, and directed by Jen McGowan, Star Trek: Discovery's "Mirrors" offers more insight into what became of that revolution.

What Happened To Mirror Universe Captain Kirk In Star Trek?

What happened to mirror universe spock revealed by star trek: discovery, spock died fighting for change..

After the events of Star Trek: The Original Series' "Mirror, Mirror," Captain Kirk left Mirror Universe Spock with a lot to think about. The goateed Vulcan apparently took Kirk's words to heart and began enacting a series of reforms to change the way things were done in the Terran Empire. Although he was attempting to prevent the collapse of the Empire, Star Trek: Discovery revealed that Spock was killed while working on his reforms. In Star Trek: Discovery season 5, episode 5, Burnham and Book explore the ISS Enterprise and discover a plaque detailing some events from the Mirror Universe.

“The light of hope shines through even the darkest of nights" became a "rallying cry" for those who opposed the violence of the Terran Empire.

Reading from the plaque, Book says that the "Terran High Chancellor was killed for trying to make reforms." Although Michael does not know that Spock was the Terran High Chancellor, the audience knows this information in Star Trek: Deep Space Nine's Mirror Universe episodes. Spock helped turn the Terran Empire into a more peaceful galactic power, and while his reforms were popular with many, some clearly opposed them. Nevertheless, Spock's dedication to logic made him less villainous than his Mirror Universe counterparts, and his words: “The light of hope shines through even the darkest of nights" became a "rallying cry" for those who opposed the violence of the Terran Empire.

Star Trek: DS9 Reveals What Happened To Mirror Universe After Spock’s Death

Spock initiated change, but couldn't prevent the fall of the terran empire..

In Star Trek: Deep Space Nine season 2, episode 23, "Crossover," Major Kira Nerys (Nana Visitor) and Dr. Julian Bashir (Alexander Siddig) find themselves in the Mirror Universe. Major Kira's Mirror Universe counterpart, Intendant Kira, runs the equivalent of Deep Space Nine (Terok Nor) as a mining station populated by Terran slaves. The Intendant reveals that Captain Kirk's visit to the Mirror Universe had a "profound influence" on Mirror Universe Spock, which led Spock to reform the Terran Empire. Unfortunately, these reforms rendered the Empire unable to defend itself when the Klingon/Cardassian Alliance decided to attack.

After conquering the Terran Empire, the Alliance proved to be just as brutal and eventually became ruled by Regent Worf (Michael Dorn).

Having been under Terran occupation for years, Bajor petitioned for entry into the Klingon/Cardassian Alliance and went on to become a major player in the Alliance. Much like Kirk's visit to the Mirror Universe affected Spock, Major Kira and Dr. Bashir's visit inspired a rebellion among the Terran slaves, which became a thorn in the side of the Alliance. Although Spock had initially been trying to prevent the fall of the Terran Empire, the Empire fell away, but some people held on to the ideals Spock had tried to spread.

Star Trek 10’s Best Mirror Universe Variants

Star trek: discovery reveals what happened to mirror universe spock’s iss enterprise, the iss enterprise became a symbol of hope and freedom..

The plaque Captain Burnham and Cleveland Booker find on the Mirror Universe's ISS Enterprise also reveals some events after Mirror Spock's death. After Spock was killed, those who believed in his reforms sought help from a "Kelpian slave turned rebel leader," aka, the Mirror Universe version of Saru (Doug Jones). Saru told these people about Star Tre k's Prime Universe, describing it as "a near perfect mirror that casts our darkness into light." While Saru stayed behind to help more people in the Mirror Universe, several rebels stole the ISS Enterprise and traveled to the Prime Universe to begin new lives.

Dr. Cho was also one of the six scientists who helped hide clues to the Progenitors' technology.

Upon returning to the USS Discovery, Michael finds proof in Federation databases that many of the refugees on the ISS Enterprise successfully made new lives for themselves in the Prime Universe . One refugee, named the Enterprise's Science Officer, Dr. Cho, joined Starfleet and eventually became a Branch Admiral. Dr. Cho was also one of the six scientists who helped hide clues to the Progenitors' technology, which remains at the center of Star Trek: Discovery season 5's quest. Michael remarks that Cho may have chosen to leave her clue on the Enterprise as a reminder that almost anyone can shape their own future, even when facing impossible odds.

New episodes of Star Trek: Discovery stream Thursdays on Paramount+.

Star Trek: Discovery

Star trek: the original series, star trek: deep space nine.