Space. The Final Frontier. The U.S.S. Enterprise embarks on a five year mission to explore the galaxy. The Enterprise is under the command of Captain James T. Kirk with First Officer Mr. Spock, from the planet Vulcan. With a determined crew, the Enterprise encounters Klingons, Romulans, time paradoxes, tribbles and genetic supermen led by Khan Noonian Singh. Their mission is to explore strange new worlds, to seek new life and new civilizations, and to boldly go where no man has gone before.
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see all options Availability data: JustWatch
- Seasons
- 3
- Episodes aired
- 79
- Latest aired
- S03E24
- Total runtime
- 2d 18h
Timeline when each season aired
- Season 1 September 1966 – April 1967 29 episodes
- Season 2 September 1967 – March 1968 26 episodes
- Season 3 September 1968 – June 1969 24 episodes
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S01E01 The Man Trap
September 8 · 50min find the promo
Show synopsis
Doctor Leonard “Bones” McCoy meets a former girlfriend when the enterprise brings supplies to a remote archaeological survey group. Still attractive to McCoy, the woman's current appearance hides a dark and deadly secret.
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S01E02 Charlie X
September 15 · 51min find the promo
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Raised from boyhood by non-corporeal beings, 17 year old Charles Evans is picked up and transferred to the Enterprise. On board the ship, the teenager proves dangerously unable to wield his enormous psionic powers with maturity.
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S01E03 Where No Man Has Gone Before
September 22 · 51min find the promo
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When Enterprise encounters a Force Field at the edge of the Galaxy, one of the crew members psionic abilities are accelerated to God like proportions causing him to become a powerful murderous being.
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S01E04 The Naked Time
September 29 · 51min find the promo
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An alien virus strips the enterprise crew of their inhibitions, causing chaos as each crew member is overcome by hidden emotions. Meanwhile, the Enterprise is being pulled inexorably into a nearby planet's gravity well.
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S01E05 The Enemy Within
October 6 · 50min find the promo
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Split by a transporter malfunction into two beings with very different personalities, the resulting twin Captain Kirk proves that neither a purely evil nor a sweetly good captain can survive without the missing half.
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S01E06 Mudd's Women
October 13 · 50min find the promo
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Rescuing the crew of a ship from an asteroid belt, the Enterprise plays host to conman extraordinaire, the cunning Harry Mudd and his cargo: three beautiful women looking for suitors.
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S01E07 What Are Little Girls Made Of?
October 20 · 50min find the promo
Show synopsis
Helping nurse Christine Chapel search for her fiancé, the Enterprise finds a detached Dr. Korby working on a plan to create Android duplicates of key figures, beginning with James Kirk.
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S01E08 Miri
October 27 · 50min find the promo
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On a planet populated by children whose aging process has been slowed artificially. Kirk’s landing party members contract a virus that kills adults. Despite their violent attacks, Kirk is determined to help the children.
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S01E09 Dagger of the Mind
November 3 · 50min find the promo
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When a wild eyed maniac escaping from the Tantalus Penal Colony turns out to be one of the psychiatric staff, Kirk investigates the institution and discovers a chilling exercise in mind control.
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S01E10 The Corbomite Maneuver
November 10 · 50min find the promo
Show synopsis
Threatened by the sinister captain of a powerful alien vessel, Kirk claims that the Enterprise carries a powerful explosive which will destroy both ships. The move produces unexpected actions from the alien adversary.
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S01E11 The Menagerie (1)
November 17 · 49min find the promo
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Apparently summoned to Star Base 11, Kirk, Spock and McCoy visit a former Enterprise Commander, the paralyzed and horribly disfigured Christopher Pike. Uncharacteristically, Spock commandeers the Enterprise, then turns himself in for court martial.
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S01E12 The Menagerie (2)
November 24 · 50min find the promo
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Spock's court martial reveals the actions of Captain Pike on his previous visit to Talos IV, where the powerful Talosians tried to persuade Pike to breed with women provided for the purpose.
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S01E13 The Conscience of the King
December 8 · 50min find the promo
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Contacted by one of the other two witnesses to the crimes of mass murderer “Kodos the Executioner,” Kirk is persuaded that the criminal may be disguising himself as an actor in a traveling theatrical troupe.
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S01E14 Balance of Terror
December 15 · 50min find the promo
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Despite the earlier Romulan war, the Romulans have never been seen in person. The Enterprise, in pursuit of a Romulan aggressor, makes a discovery that causes suspicion about a senior crew member.
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S01E15 Shore Leave
December 29 · 50min find the promo
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When McCoy sees the White Rabbit from Alice in Wonderland, the crew begins to realize that the planet they are visiting seems to have the dangerous power to turn any thought into reality.
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S01E16 The Galileo Seven
January 5 · 50min find the promo
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Crash landing on a planet populated by hostile giants, the 7-man crew of the shuttlecraft Galileo find themselves unable to communicate with the enterprise or to escape the planet's atmosphere.
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S01E17 The Squire of Gothos
January 12 · 50min find the promo
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Encountering an uncharted planet in an empty region of space, Kirk and his crew are entertained by Trelane, a playful being who lacks the self-control to wield his great psionic powers with discipline.
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S01E18 Arena
January 19 · 51min find the promo
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With both their ships held captive by powerful beings, Kirk and the captain of the alien vessel are placed on an asteroid to fight for their lives and the lives of their crews.
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S01E19 Tomorrow Is Yesterday
January 26 · 50min find the promo
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In a freak accident the Enterprise is sent back to 20th century Earth, and must find their way back without changing history.
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S01E20 Court Martial
February 2 · 50min find the promo
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Captain Kirk's career is at stake when he is put on trial for the loss of a crewman during an ion storm.
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S01E21 The Return of the Archons
February 9 · 50min find the promo
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The Enterprise encounters a seemingly peaceful civilization run by a "benevolent" being named Landru... who intends for them to join his people.
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S01E22 Space Seed
February 16 · 50min find the promo
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The Enterprise picks up a crew of genetic supermen from the 20th century... and their leader, Khan, plans to create a new empire.
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S01E23 A Taste of Armageddon
February 23 · 50min find the promo
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The Enterprise arrives at a planet to establish diplomatic relations and finds itself in the middle of a "peaceful" war that threatens to destroy the ship.
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S01E24 This Side of Paradise
March 2 · 50min find the promo
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The Enterprise crew try to rescue colonists from deadly radiation, but instead encounter strange alien spores that seem to offer paradise.
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S01E25 The Devil in the Dark
March 9 · 50min find the promo
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Kirk investigates a series of grisly murders on a mining planet that are the work of a seemingly hostile alien creature.
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S01E26 Errand of Mercy
March 23 · 50min find the promo
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The Federation and the Klingon Empire teeter on the brink of war as Kirk investigates Organia, a humble planet, inhabited by pacifists, that is unwittingly caught in the middle.
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S01E27 The Alternative Factor
March 30 · 51min find the promo
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Kirk and Spock encounter an alien named Lazarus who claims to be from an anti-matter universe.
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S01E28 The City on the Edge of Forever
April 6 · 50min find the promo
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Kirk and Spock must travel into the past in order to correct a change that will alter history.
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S01E29 Operation: Annihilate!
April 13 · 50min find the promo
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Kirk and the Enterprise must combat parasitic aliens threatening the lives of millions.