Star Trek · Season 3 24 Episodes

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NoFirst Air DateNameOverview
3x1Spock's BrainAn alien female beams aboard the ship and, after incapacitating the rest of the crew, surgically removes Spock's brain. Kirk and the crew have just hours to locate and replace it before Spock's body dies.
3x2The Enterprise IncidentThe crew of the Enterprise are on a secret mission to steal a Romulan cloaking device.
3x3The Paradise SyndromeAn alien device on a primitive planet erases Captain Kirk's memory, and he begins a new life with the planet's indigenous people.
3x4And the Children Shall LeadOn a distant planet, Kirk, Spock and McCoy find a scientific team dead, and their children who, unknown to the crew, have great powers at their disposal.
3x5Is There in Truth No Beauty?The Enterprise travels with an alien ambassador whose appearance induces madness.
3x6Spectre of the GunHaving been found trespassers into Melkotian space, Captain Kirk and his companions are sent to die in a re-enactment of the gunfight at the O.K. Corral.
3x7Day of the DoveAn alien force drives the crew of the Enterprise into brutal conflict with the Klingons.
3x8For the World Is Hollow and I Have Touched the SkyThe crew of the Enterprise rush to stop an asteroid from colliding with a Federation world, but discover the asteroid is actually an inhabited generation ship.
3x9The Tholian WebCaptain Kirk is caught between dimensions while the crew of the Enterprise works to retrieve him. All the while, the Tholians demand that the Enterprise leave their space.
3x10Plato's StepchildrenThe crew of the Enterprise encounters an ageless and sadistic race of humanoids with the power of telekinesis and who claim to have organized their society around Ancient Greek ideals.
3x11Wink of an EyeInvisible "time-accelerated" aliens take over the Enterprise and attempt to abduct the crew for use as "genetic stock".
3x12The EmpathWhile visiting a doomed planet, the landing party is subject to torturous experiments by powerful aliens.
3x13Elaan of TroyiusThe USS Enterprise ferries a spoiled princess whose betrothal to a royal Troyian is hoped will bring peace to a star system at war.
3x14Whom Gods DestroyCaptain Kirk faces off with a demented shape-shifting starship captain determined to control the universe.
3x15Let That Be Your Last BattlefieldThe Enterprise encounters two duo-chromatic and mutually belligerent aliens who put the ship in the middle of their old conflict
3x16The Mark of GideonA race of overpopulated aliens abduct Captain Kirk to solve their problem.
3x17That Which SurvivesKirk, McCoy, and Sulu are stranded on a barren planet where a mysterious woman attempts to kill them one at a time, while the Enterprise must travel halfway across the galaxy to rescue them.
3x18The Lights of ZetarStrange incorporeal aliens threaten the Memory Alpha station and the Enterprise.
3x19Requiem for MethuselahThe crew of the Enterprise encounter an immortal human in this science fiction variation on Shakespeare's The Tempest.
3x20The Way to EdenThe Enterprise picks up a group of space ""hippies"" looking for Eden.
3x21The Cloud MindersCaptain Kirk races against time to acquire plague-fighting minerals from a world in the midst of a civil uprising against a grievous social class disparity.
3x22The Savage CurtainAliens force Captain Kirk and First Officer Spock to join forces with "Abraham Lincoln" and "Surak" to battle villains in a contest of good vs. evil.
3x23All Our YesterdaysKirk, Spock and McCoy are trapped in two parts of another planet's past—a world threatened with destruction when its sun goes supernova.
3x24Turnabout IntruderThe Enterprise is in danger when Janice Lester, one of Kirk's former lovers, steals his body.


James T. KirkWilliam Shatner
SpockLeonard Nimoy
Leonard McCoyDeForest Kelley
Mr. ScottJames Doohan
Hikaru SuluGeorge Takei
Pavel ChekovWalter Koenig
UhuraNichelle Nichols