The Alternative Factor

1 The Man Trap 2 Charlie X 3 Where No Man Has Gone Before 4 The Naked Time 5 The Enemy Within 6 Mudd's Women 7 What Are Little Girls Made Of? 8 Miri 9 Dagger of the Mind 10 The Corbomite Maneuver 11 The Menagerie (1) 12 The Menagerie (2) 13 The Conscience of the King 14 Balance of Terror 15 Shore Leave 16 The Galileo Seven 17 The Squire of Gothos 18 Arena 19 Tomorrow Is Yesterday 20 Court Martial 21 The Return of the Archons 22 Space Seed 23 A Taste of Armageddon 24 This Side of Paradise 25 The Devil in the Dark 26 Errand of Mercy 27 The Alternative Factor 28 The City on the Edge of Forever 29 Operation: Annihilate!