Series
1966–1969
·3 seasons
·79 episodes
·Set 2265–2269
Star Trek: The Original Series
Captain Kirk, Spock and the crew of the USS Enterprise on a five-year mission of exploration. The series that started it all.
Episode guide
Films & specials 10 logged
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Star Trek: The Motion PictureV'Ger, an unknown entity of enormous power, approaches Earth, and Admiral Kirk takes back command of the refi…
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Star Trek II: The Wrath of KhanKhan Noonien Singh escapes his exile on Ceti Alpha V and hunts Kirk across the Mutara Nebula.
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Star Trek III: The Search for SpockKirk steals the Enterprise to recover Spock's katra from the Genesis planet.
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Star Trek IV: The Voyage HomeHeading home to face charges, Kirk's crew travels to 1986 San Francisco to find humpback whales that can answ…
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Star Trek V: The Final FrontierA charismatic Vulcan, Sybok, hijacks the Enterprise-A to find God at the centre of the galaxy.
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Star Trek VI: The Undiscovered CountryThe Klingon Empire is on the brink of collapse and a plot threatens peace talks with the Federation.
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Star Trek (2009)A Romulan miner from the future, Nero, destroys the USS Kelvin and creates an alternate timeline in which a y…
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Star Trek Into DarknessA rogue Starfleet operative, John Harrison, attacks Starfleet and flees to Kronos.
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Star Trek BeyondThe Enterprise is wrecked at the edge of explored space and the crew faces Krall.
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The CageThe unaired pilot: Captain Pike and his crew are lured to Talos IV by illusion-casting aliens who want a huma…
Season 1 29 logged
01
The Man TrapA creature that feeds on salt impersonates a former love of Dr. McCoy and stalks the crew of the Enterprise.
02
Charlie XA teenager raised alone with extraordinary powers cannot cope with human society, and the Enterprise pays for…
03
Where No Man Has Gone BeforeExposure to the galactic barrier gives Gary Mitchell godlike abilities, forcing Kirk to confront his oldest f…
04
The Naked TimeA contagion strips away the crew's inhibitions while the Enterprise races to avoid a collapsing planet.
05
The Enemy WithinA transporter malfunction splits Kirk into a gentle half and a savage half, neither able to command alone.
06
Mudd's WomenA smooth-talking smuggler delivers three remarkable women to lonely miners, and Kirk learns the secret of the…
07
What Are Little Girls Made Of?On a frozen world Nurse Chapel searches for her fiancé and finds androids who want to replace the crew.
08
MiriThe crew finds a duplicate Earth where only children survive, and a disease is killing the landing party.
09
Dagger of the MindAn escaped inmate from a penal colony reveals that its director is experimenting on his patients.
10
The Corbomite ManeuverAn enormous alien vessel threatens destruction, and Kirk answers with the best bluff in Starfleet history.
11
The MenagerieSpock steals the Enterprise to deliver the crippled Captain Pike to a forbidden world, and a court-martial re…
12
The Menagerie, Part IISpock's court-martial concludes as the truth behind his hijacking of the Enterprise to Talos IV comes into vi…
13
The Conscience of the KingKirk suspects a travelling actor is a mass murderer from his past on Tarsus IV.
14
Balance of TerrorA Romulan warship tests the Neutral Zone in a tense submarine-style duel with the Enterprise.
15
Shore LeaveOn an idyllic planet the crew's memories and fantasies become real, with sometimes lethal results.
16
The Galileo SevenSpock commands a stranded shuttlecraft crew and discovers how difficult command by logic really is.
17
The Squire of GothosA powerful being who plays at being a nobleman toys with Kirk and his officers.
18
ArenaKirk is forced to fight the captain of a Gorn vessel in single combat, with a whole sector as the prize.
19
Tomorrow Is YesterdayThe Enterprise is flung back to the twentieth century and must retrieve an Air Force pilot without altering h…
20
Court MartialKirk faces a court-martial over the apparent death of a crewman, until it emerges that the man faked his own …
21
The Return of the ArchonsThe landing party finds a world governed by a computer, Landru, and a placid society that erupts each night.
22
Space SeedThe crew revives a group of genetically engineered tyrants led by Khan Noonien Singh.
23
A Taste of ArmageddonTwo planets fight a war by computer, and the casualties report voluntarily to disintegration chambers.
24
This Side of ParadiseSpores on a colony planet bring peace and contentment, and even Spock falls under their spell.
25
The Devil in the DarkMiners on Janus VI are being killed by a creature that turns out to be a mother protecting her eggs.
26
Errand of MercyThe first meeting with the Klingons ends with two empires being told to stand down by a people they thought h…
27
The Alternative FactorA man claims to be hunting a madman, and the universe itself seems to wobble at the edges.
28
The City on the Edge of ForeverKirk and Spock travel to Depression-era New York to repair a change in history that begins with a woman named…
29
Operation -- Annihilate!Parasitic creatures spreading across the galaxy take over Kirk's brother's colony and threaten his crew.
Season 2 26 logged
01
Amok TimeSpock's pon farr forces the Enterprise to Vulcan, where he must fight Kirk or die.
02
Who Mourns for Adonais?A being claiming to be Apollo demands the worship of the crew and meets resistance.
03
The ChangelingAn ancient probe, Nomad, believes Kirk is its creator and sets out to sterilise imperfection.
04
Mirror, MirrorA transporter accident sends Kirk and others to a brutal parallel universe where the Federation is an empire.
05
The AppleA tropical planet's inhabitants are tended by a machine, Vaal, that regards the Enterprise as a threat.
06
The Doomsday MachineA planet-killing weapon has destroyed a starship and now bears down on the Enterprise.
07
CatspawTwo aliens in a spooky castle terrorise the landing party in order to understand human fear.
08
I, MuddHarry Mudd has set himself up as ruler of a planet of androids and plans to hand the Enterprise over to them.
09
MetamorphosisA shuttle crash strands Kirk's party with a reclusive scientist and a luminous entity that loves him.
10
Journey to BabelA conference of ambassadors becomes a murder mystery, and Spock must reckon with his father.
11
Friday's ChildA Federation mission to a warrior planet gets tangled in tribal succession and a pregnant widow.
12
The Deadly YearsAging rapidly after a planetary visit, the senior officers cannot be trusted with the ship.
13
ObsessionKirk becomes fixated on a vapour creature that killed part of his old crew.
14
Wolf in the FoldScotty is accused of murdering women, and an ancient entity is feeding on fear.
15
The Trouble with TribblesA small, fast-breeding creature invades the Enterprise and a space station in the middle of a grain dispute.
16
The Gamesters of TriskelionKirk, Uhura and Chekov are abducted to be gladiators for the amusement of disembodied rulers.
17
A Piece of the ActionThe crew visits a planet whose culture was modelled on an Earth book about 1920s gangsters.
18
The Immunity SyndromeA giant space amoeba drains the life from stars, and Spock volunteers for a likely one-way mission.
19
A Private Little WarKirk faces a decision about arming a primitive people when the Klingons already have.
20
Return to TomorrowAncient disembodied beings borrow the bodies of Kirk, Spock and Dr. Ann Mulhall for a deadly purpose.
21
Patterns of ForceA historian's well-intentioned experiment has turned a society into a copy of Nazi Germany.
22
By Any Other NameThe Kelvans, visitors from another galaxy, take over the Enterprise for a long voyage home.
23
The Omega GloryKirk finds a rogue starship captain meddling in a war between two peoples on Omega IV, a world whose history …
24
The Ultimate ComputerAn experimental computer designed to run the ship goes rogue and takes aim at other Starfleet vessels.
25
Bread and CircusesA planet where Rome never fell treats Kirk and his officers as gladiators and prisoners.
26
Assignment: EarthA time-travelling operative, Gary Seven, intercepts the Enterprise in 1968 and entangles it in a rocket launc…
Season 3 24 logged
01
Spock's BrainAliens steal Spock's brain and the crew must retrieve it, with McCoy temporarily guiding the body.
02
The Enterprise IncidentKirk apparently orders a violation of Romulan space, in a scheme to steal a cloaking device.
03
The Paradise SyndromeKirk loses his memory and lives among a tribe descended from Native Americans while the Enterprise tries to d…
04
And the Children Shall LeadA group of children is manipulated by an evil entity into taking over the ship.
05
Is There in Truth No Beauty?A Medusan ambassador is carried aboard in a box, and his form can drive observers mad.
06
Spectre of the GunThe landing party is forced into a re-creation of the gunfight at the O.K. Corral.
07
Day of the DoveAn energy being that feeds on hatred sets the Klingons and the crew against each other.
08
For the World Is Hollow and I Have Touched the SkyDr. McCoy discovers he is dying and finds that an asteroid is actually a generational ship.
09
The Tholian WebKirk disappears into a spatial interphase while the crew is slowly affected by a mysterious force.
10
Plato's StepchildrenTelekinetic humanoids on Platonius torment the crew for sport.
11
Wink of an EyeAccelerated aliens, the Scalosians, take over the ship by moving too fast to see.
12
The EmpathKirk, Spock and McCoy are tested by aliens who want to know if a mute woman's species is worth saving.
13
Elaan of TroyiusThe Enterprise ferries a spoiled but dangerous princess to a political marriage as Klingon ships close in.
14
Whom Gods DestroyA once-great Starfleet hero is a patient in an asylum where inmates have taken control.
15
Let That Be Your Last BattlefieldTwo beings from the same world who hate each other over their skin colour carry their war aboard the Enterpri…
16
The Mark of GideonA planet with no disease and no deaths appears to have kidnapped Kirk.
17
That Which SurvivesA woman's image kills crew members as the Enterprise is flung beyond known space.
18
The Lights of ZetarA group of energy beings attempts to take over Lt. Mira Romaine, a memory-alpha specialist.
19
Requiem for MethuselahDuring a deadly epidemic, Kirk meets an immortal recluse named Flint on a remote planet and falls in love wit…
20
The Way to EdenSpace hippies searching for a mythical planet steal a shuttle and trigger a chain of disasters.
21
The Cloud MindersA city above the clouds has a class system that depends on a mineral gas that makes the underclass dull.
22
The Savage CurtainAbraham Lincoln and Surak appear to help Kirk and Spock fight historical villains on a rocky planet.
23
All Our YesterdaysA time portal leaves Kirk, Spock and McCoy stranded in different eras of a dying planet.
24
Turnabout IntruderA former lover of Kirk uses a machine to switch bodies with him and seize command of the ship.