Episode Information
About this episode
Obsession is season 2, episode 18 of Star Trek: The Original Series, first aired on 15 December 1967.
In series order, the previous episode is S02E17 — The Gamesters of Triskelion and the next is S02E19 — The Immunity Syndrome. By original air date, the previous episode is S02E11 — The Deadly Years and the next is S02E07 — Wolf in the Fold.
Browse every episode in Season 2.
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