Star Trek: Season 2
Season 2 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Picks up essential narrative continuity directly following the events of Star Trek Season 1.
- Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
- Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
- Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
Episode Guide
Season 2 Progress Shield
Amok Time
Sep 15, 1967 · 50 min
First Officer Spock returns to his home world for a brutal Vulcan mating ritual.
Who Mourns for Adonais?
Sep 22, 1967 · 51 min
The crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo.
The Changeling
Sep 29, 1967 · 50 min
The crew of the USS Enterprise deals with an indestructible planet-destroying space probe.
Mirror, Mirror
Oct 6, 1967 · 50 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 Te
The Apple
Oct 13, 1967 · 50 min
The crew of the Enterprise visits a mysterious paradisical planet controlled by a computer that is served by the local inhabitants.
The Doomsday Machine
Oct 20, 1967 · 51 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 te
Catspaw
Oct 27, 1967 · 50 min
Two powerful aliens threaten the well-being of the Enterprise and her crew.
I, Mudd
Nov 3, 1967 · 51 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.
Metamorphosis
Nov 10, 1967 · 50 min
A shuttle crew from the USS Enterprise encounters a man out of history and his mysterious alien companion.
Journey to Babel
Nov 17, 1967 · 50 min
The Enterprise must transport dignitaries to a peace conference, with an assassin on the loose.
Friday's Child
Dec 1, 1967 · 50 min
The crew of the Enterprise become entangled in a planet's tribal power struggle.
The Deadly Years
Dec 8, 1967 · 50 min
Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging.
Obsession
Dec 15, 1967 · 50 min
Captain James T. Kirk becomes obsessed with destroying a deadly entity he once encountered in his youth.
Wolf in the Fold
Dec 22, 1967 · 51 min
A series of bizarre murders points to Mr. Scott as the prime suspect.
The Trouble With Tribbles
Dec 29, 1967 · 50 min
The Enterprise must protect a very important shipment of grain from both Klingons and some adorable creatures called tribbles.
The Gamesters of Triskelion
Jan 5, 1968 · 50 min
Captain Kirk and his companions are abducted into slavery and trained to fight as gladiators for the gambling entertainment of three disembodied beings.
A Piece of the Action
Jan 12, 1968 · 50 min
The Enterprise visits a planet with an Earth-like 1920s gangster culture.
The Immunity Syndrome
Jan 19, 1968 · 50 min
The crew of the Enterprise encounters an energy-draining field which may be able to destroy the galaxy.
A Private Little War
Feb 2, 1968 · 51 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.
Return to Tomorrow
Feb 9, 1968 · 50 min
Ancient alien minds are given control of Captain Kirk's and First Officer Spock's bodies.
Patterns of Force
Feb 16, 1968 · 50 min
The crew of the Enterprise tracks down a Federation observer on a planet dominated by a "Naziesque" regime.
By Any Other Name
Feb 23, 1968 · 50 min
Beings from another galaxy commandeer the Enterprise in an attempt to return home.
The Omega Glory
Mar 1, 1968 · 50 min
Captain Kirk must find the cure to a deadly disease and put an end to another Starfleet captain's cultural interference.
The Ultimate Computer
Mar 8, 1968 · 50 min
A skeleton Enterprise crew are assigned to test a revolutionary computer system that is given total control of the ship.
Bread and Circuses
Mar 15, 1968 · 50 min
The Enterprise crew investigates the disappearance of a ship's crew on a planet that is a modern version of the Roman Empire.
Assignment: Earth
Mar 29, 1968 · 50 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.