Star Trek S3E23 poster

Watch Star Trek – Season 3 Episode 23: All Our Yesterdays

Star Trek • Season 3, Episode 23 • 51 min • 1966 • ⭐ 8.0/10 • Drama , Sci-Fi & Fantasy

Cast: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan , Walter Koenig , George Takei , Nichelle Nichols

Directors: Gene Roddenberry

Watch Star Trek – S3E23

Episode Overview

Kirk, Spock and McCoy are trapped in two parts of another planet's past - a world threatened with destruction when its sun goes supernova.

Episode Navigation

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