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Star Trek: S1 E18
Arena
When a mysterious alien race destroy an Earth colony, the Enterprise pursues but Kirk and the alien captain are forced to fight each other by powerful aliens.
S1 - E1The Man Trap Sep. 08, 1966
S1 - E2Charlie X Sep. 15, 1966
S1 - E3Where No Man Has Gone Before Sep. 22, 1966
S1 - E4The Naked Time Sep. 29, 1966
S1 - E5The Enemy Within Oct. 06, 1966
S1 - E6Mudd's Women Oct. 13, 1966
S1 - E7What Are Little Girls Made Of? Oct. 20, 1966
S1 - E8Miri Oct. 27, 1966
S1 - E9Dagger of the Mind Nov. 03, 1966
S1 - E10The Corbomite Maneuver Nov. 10, 1966
S1 - E11The Menagerie (1) Nov. 17, 1966
S1 - E12The Menagerie (2) Nov. 24, 1966
S1 - E13The Conscience of the King Dec. 08, 1966
S1 - E14Balance of Terror Dec. 15, 1966
S1 - E15Shore Leave Dec. 29, 1966
S1 - E16The Galileo Seven Jan. 05, 1967
S1 - E17The Squire of Gothos Jan. 12, 1967
S1 - E18Arena Jan. 19, 1967
S1 - E19Tomorrow Is Yesterday Jan. 26, 1967
S1 - E20Court Martial Feb. 02, 1967
S1 - E21The Return of the Archons Feb. 09, 1967
S1 - E22Space Seed Feb. 16, 1967
S1 - E23A Taste of Armageddon Feb. 23, 1967
S1 - E24This Side of Paradise Mar. 02, 1967
S1 - E25The Devil in the Dark Mar. 09, 1967
S1 - E26Errand of Mercy Mar. 23, 1967
S1 - E27The Alternative Factor Mar. 30, 1967
S1 - E28The City on the Edge of Forever Apr. 06, 1967
S1 - E29Operation: Annihilate! Apr. 13, 1967