Star Trek S3E18 poster

Watch Star Trek – Season 3 Episode 18: The Lights of Zetar

Star Trek • Season 3, Episode 18 • 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 – S3E18

Episode Overview

Strange incorporeal aliens threaten the Memory Alpha station and the Enterprise.

Episode Navigation

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