All episodes — Season 2
S2 E1Amok Time
Sep 15, 19678.450 min
First Officer Spock returns to his home world for a brutal Vulcan mating ritual.
S2 E2Who Mourns for Adonais?
Sep 22, 19676.751 min
The crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo.
S2 E3The Changeling
Sep 29, 19677.650 min
The crew of the USS Enterprise deals with an indestructible planet-destroying space probe.
S2 E4Mirror, Mirror
Oct 6, 19678.550 min
A transporter mishap swaps Captain Kirk and his companions with their evil counterparts in a parallel universe. In the so-called Mirror Universe, the Enterprise is a ship of the Terran Empire, an organization as evil as the United Federatio
S2 E5The Apple
Oct 13, 19676.750 min
The crew of the Enterprise visits a mysterious paradisical planet controlled by a computer that is served by the local inhabitants.
S2 E6The Doomsday Machine
Oct 20, 19678.251 min
The starship Enterprise and its heavily-damaged sister ship, the USS Constellation, must work together to stop an alien planet-killing machine headed for the heart of Federation territory.
S2 E7Catspaw
Oct 27, 19676.250 min
Two powerful aliens threaten the well-being of the Enterprise and her crew.
S2 E8I, Mudd
Nov 3, 19677.351 min
Captain Kirk has a second run-in with the conman, Harry Mudd. Mudd is now the supreme ruler of a planet of androids who cater to his every whim.
S2 E9Metamorphosis
Nov 10, 19677.150 min
A shuttle crew from the USS Enterprise encounters a man out of history and his mysterious alien companion.
S2 E10Journey to Babel
Nov 17, 19678.150 min
The Enterprise must transport dignitaries to a peace conference, with an assassin on the loose.
S2 E11Friday's Child
Dec 1, 19676.850 min
The crew of the Enterprise become entangled in a planet's tribal power struggle.
S2 E12The Deadly Years
Dec 8, 19677.450 min
Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging.
S2 E13Obsession
Dec 15, 19677.150 min
Captain James T. Kirk becomes obsessed with destroying a deadly entity he once encountered in his youth.
S2 E14Wolf in the Fold
Dec 22, 19677.151 min
A series of bizarre murders points to Mr. Scott as the prime suspect.
S2 E15The Trouble With Tribbles
Dec 29, 19678.550 min
The Enterprise must protect a very important shipment of grain from both Klingons and some adorable creatures called tribbles.
S2 E16The Gamesters of Triskelion
Jan 5, 19687.150 min
Captain Kirk and his companions are abducted into slavery and trained to fight as gladiators for the gambling entertainment of three disembodied beings.
S2 E17A Piece of the Action
Jan 12, 19687.550 min
The Enterprise visits a planet with an Earth-like 1920s gangster culture.
S2 E18The Immunity Syndrome
Jan 19, 19687.550 min
The crew of the Enterprise encounters an energy-draining field which may be able to destroy the galaxy.
S2 E19A Private Little War
Feb 2, 19687.151 min
The crew of the Enterprise discovers Klingon interference in the development of a formerly peaceful planet and is forced to help maintain a balance of power.
S2 E20Return to Tomorrow
Feb 9, 19687.550 min
Ancient alien minds are given control of Captain Kirk's and First Officer Spock's bodies.
S2 E21Patterns of Force
Feb 16, 19687.750 min
The crew of the Enterprise tracks down a Federation observer on a planet dominated by a "Naziesque" regime.
S2 E22By Any Other Name
Feb 23, 19687.650 min
Beings from another galaxy commandeer the Enterprise in an attempt to return home.
S2 E23The Omega Glory
Mar 1, 19686.350 min
Captain Kirk must find the cure to a deadly disease and put an end to another Starfleet captain's cultural interference.
S2 E24The Ultimate Computer
Mar 8, 1968850 min
A skeleton Enterprise crew are assigned to test a revolutionary computer system that is given total control of the ship.
S2 E25Bread and Circuses
Mar 15, 1968750 min
The Enterprise crew investigates the disappearance of a ship's crew on a planet that is a modern version of the Roman Empire.
S2 E26Assignment: Earth
Mar 29, 19687.450 min
While back in time observing Earth in 1968, the Enterprise crew encounters the mysterious Gary Seven who has his own agenda on the planet.