The Lights of Zetar

Jan 31, 1969 on NBC at 8:30 PM


The Enterprise must deal with discorporeal cloud-like corporeal aliens who have already destroyed the inhabitants of a library planet and plan to eliminate the Enterprise crew if they cannot acquire a human host.

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That Which Survives
Season 3 Episode 17

Jan 24, 1969

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Requiem for Methuselah
Season 3 Episode 19

Feb 14, 1969