All Our Yesterdays
Series: Star Trek
Airdate: March 14, 1969 | Year Set: 2269
Season 3, Episode 23
Summary
While trying to locate the missing population of a planet doomed by a coming nova, Kirk, Spock, and McCoy find a mysterious librarian who sends them back into the planet's past. While Spock and McCoy fight for survival in a frigid landscape, Kirk is accused of witchcraft.