S1 E1: The Man Trap

S1 E2: Charlie X

S1 E3: Where No Man Has Gone Before

S1 E4: The Naked Time

S1 E5: The Enemy Within

S1 E6: Mudd's Women

S1 E7: What Are Little Girls Made Of?

S1 E8: Miri

S1 E9: Dagger of the Mind

S1 E10: The Corbomite Maneuver

S1 E11: The Menagerie (1)

S1 E12: The Menagerie (2)

S1 E13: The Conscience of the King

S1 E14: Balance of Terror

S1 E15: Shore Leave

S1 E16: The Galileo Seven

S1 E17: The Squire of Gothos

S1 E18: Arena

S1 E19: Tomorrow Is Yesterday

S1 E20: Court Martial

S1 E21: The Return of the Archons

S1 E22: Space Seed

S1 E23: A Taste of Armageddon

S1 E24: This Side of Paradise

S1 E25: The Devil in the Dark

S1 E26: Errand of Mercy

S1 E27: The Alternative Factor

S1 E28: The City on the Edge of Forever

S1 E29: Operation: Annihilate!