Season 2

01 Amok Time Episode 115th September 1967 First Officer Spock returns to his home world for a brutal Vulcan mating ritual. 02 Who Mourns for Adonais? Episode 222nd September 1967 The crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo. 03 The Changeling Episode 329th September 1967 The crew of the USS Enterprise deals with an indestructible planet-destroying space probe. 04 Mirror, Mirror Episode 46th October 1967 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 Federation of Planets is benevolent. 05 The Apple Episode 513th October 1967 The crew of the Enterprise visits a mysterious paradisical planet controlled by a computer that is served by the local inhabitants. 06 The Doomsday Machine Episode 620th October 1967 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. 07 Catspaw Episode 727th October 1967 Two powerful aliens threaten the well-being of the Enterprise and her crew. 08 I, Mudd Episode 83rd November 1967 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. 09 Metamorphosis Episode 910th November 1967 A shuttle crew from the USS Enterprise encounters a man out of history and his mysterious alien companion. 10 Journey to Babel Episode 1017th November 1967 The Enterprise must transport dignitaries to a peace conference, with an assassin on the loose. 11 Friday's Child Episode 111st December 1967 The crew of the Enterprise become entangled in a planet's tribal power struggle. 12 The Deadly Years Episode 128th December 1967 Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging. 13 Obsession Episode 1315th December 1967 Captain James T. Kirk becomes obsessed with destroying a deadly entity he once encountered in his youth. 14 Wolf in the Fold Episode 1422nd December 1967 A series of bizarre murders points to Mr. Scott as the prime suspect. 15 The Trouble With Tribbles Episode 1529th December 1967 The Enterprise must protect a very important shipment of grain from both Klingons and some adorable creatures called tribbles. 16 The Gamesters of Triskelion Episode 165th January 1968 Captain Kirk and his companions are abducted into slavery and trained to fight as gladiators for the gambling entertainment of three disembodied beings. 17 A Piece of the Action Episode 1712th January 1968 The Enterprise visits a planet with an Earth-like 1920s gangster culture. 18 The Immunity Syndrome Episode 1819th January 1968 The crew of the Enterprise encounters an energy-draining field which may be able to destroy the galaxy. 19 A Private Little War Episode 192nd February 1968 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. 20 Return to Tomorrow Episode 209th February 1968 Ancient alien minds are given control of Captain Kirk's and First Officer Spock's bodies. 21 Patterns of Force Episode 2116th February 1968 The crew of the Enterprise tracks down a Federation observer on a planet dominated by a "Naziesque" regime. 22 By Any Other Name Episode 2223rd February 1968 Beings from another galaxy commandeer the Enterprise in an attempt to return home. 23 The Omega Glory Episode 231st March 1968 Captain Kirk must find the cure to a deadly disease and put an end to another Starfleet captain's cultural interference. 24 The Ultimate Computer Episode 248th March 1968 A skeleton Enterprise crew are assigned to test a revolutionary computer system that is given total control of the ship. 25 Bread and Circuses Episode 2515th March 1968 The Enterprise crew investigates the disappearance of a ship's crew on a planet that is a modern version of the Roman Empire. 26 Assignment: Earth Episode 2629th March 1968 While back in time observing Earth in 1968, the Enterprise crew encounters the mysterious Gary Seven who has his own agenda on the planet.