The Best Episodes of Star Trek Season 2

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.

Director: Marc Daniels

Writer: Jerome Bixby

The Enterprise must protect a very important shipment of grain from both Klingons and some adorable creatures called tribbles.

Director: Joseph Pevney

Writer: David Gerrold

First Officer Spock returns to his home world for a brutal Vulcan mating ritual.

Director: Joseph Pevney

Writer: Theodore Sturgeon

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.

Director: Marc Daniels

Writer: Norman Spinrad

The Enterprise must transport dignitaries to a peace conference, with an assassin on the loose.

Director: Joseph Pevney

Writer: D.C. Fontana

A skeleton Enterprise crew are assigned to test a revolutionary computer system that is given total control of the ship.

Director: John Meredyth Lucas

Writer: D.C. Fontana, Laurence N. Wolfe

The Enterprise visits a planet with an Earth-like 1920s gangster culture.

Director: James Komack

Writer: Gene L. Coon, David P. Harmon

The crew of the USS Enterprise deals with an indestructible planet-destroying space probe.

Director: Marc Daniels

Writer: John Meredyth Lucas

The crew of the Enterprise encounters an energy-draining field which may be able to destroy the galaxy.

Director: Joseph Pevney

Writer: Robert Sabaroff

Beings from another galaxy commandeer the Enterprise in an attempt to return home.

Director: Marc Daniels

Writer: D.C. Fontana, Jerome Bixby

While back in time observing Earth in 1968, the Enterprise crew encounters the mysterious Gary Seven who has his own agenda on the planet.

Director: Marc Daniels

Writer: Gene Roddenberry, Art Wallace

Ancient alien minds are given control of Captain Kirk's and First Officer Spock's bodies.

Director: Ralph Senensky

Writer: John T. Dugan

The crew of the Enterprise tracks down a Federation observer on a planet dominated by a "Naziesque" regime.

Director: Vincent McEveety

Writer: John Meredyth Lucas

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.

Director: Marc Daniels

Writer: Gene Roddenberry, David Gerrold

Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging.

Director: Joseph Pevney

Writer: David P. Harmon

A shuttle crew from the USS Enterprise encounters a man out of history and his mysterious alien companion.

Director: Ralph Senensky

Writer: Gene L. Coon

Captain James T. Kirk becomes obsessed with destroying a deadly entity he once encountered in his youth.

Director: Ralph Senensky

Writer: Art Wallace

A series of bizarre murders points to Mr. Scott as the prime suspect.

Director: Joseph Pevney

Writer: Robert Bloch

The crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo.

Director: Marc Daniels

Writer: Gene L. Coon, Gilbert Ralston

Captain Kirk and his companions are abducted into slavery and trained to fight as gladiators for the gambling entertainment of three disembodied beings.

Director: Gene Nelson

Writer: Margaret Armen

The Enterprise crew investigates the disappearance of a ship's crew on a planet that is a modern version of the Roman Empire.

Director: Ralph Senensky

Writer: Gene Roddenberry, Gene L. Coon, John Kneubuhl

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.

Director: Marc Daniels

Writer: Gene Roddenberry, Don Ingalls

The crew of the Enterprise become entangled in a planet's tribal power struggle.

Director: Joseph Pevney

Writer: D.C. Fontana

The crew of the Enterprise visits a mysterious paradisical planet controlled by a computer that is served by the local inhabitants.

Director: Joseph Pevney

Writer: Gene L. Coon, Max Simon Ehrlich

Two powerful aliens threaten the well-being of the Enterprise and her crew.

Director: Joseph Pevney

Writer: D.C. Fontana, Robert Bloch