Season 1 (1973)
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Episodes 16
Beyond the Farthest Star
In orbit around a dead star, the Enterprise comes across a huge starship inhabited by a parasitic life form that threatens the entire ship.
Read MoreYesteryear
Spock travels back in time to prevent his death as a young Vulcan.
Read MoreOne of Our Planets Is Missing
The crew of the Enterprise races to find a way to stop a cloud from destroying inhabited planets.
Read MoreThe Lorelei Signal
Female crew members must take over the Enterprise when the men are incapacitated by a race of sirens.
Read MoreMore Tribbles, More Troubles
Cyrano Jones introduces tribbles that cannot reproduce.
Read MoreThe Survivor
The Enterprise finds a long-lost explorer.
Read MoreThe Infinite Vulcan
A race of plant people, and their master, have a plan to force peace onto the galaxy.
Read MoreThe Magicks of Megas-tu
At the center of the galaxy, the Enterprise discovers a race of powerful aliens.
Read MoreOnce Upon a Planet
Kirk returns to the "shore leave" planet, but it's not as peaceful as it was when they last saw it.
Read MoreMudd's Passion
Space con artist Harry Mudd returns, selling a fake love potion.
Read MoreThe Terratin Incident
The Enterprise crew begins to shrink after radiation exposure.
Read MoreThe Time Trap
The Enterprise crew must work with Klingons to escape from a pocket universe.
Read MoreThe Ambergris Element
While exploring the planet Argo, Kirk and Spock are turned into water breathers.
Read MoreThe Slaver Weapon
Spock, Sulu, and Uhura discover a time capsule from an ancient and technologically advanced race. However, it draws some unwanted attention.
Read MoreThe Eye of the Beholder
Telepathic aliens put Kirk, Spock and McCoy in a zoo.
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