The Original Series: Season 2 (1967-1968)
S02E19

The Immunity Syndrome

Stardate: 4307.1 Year: 2268

The crew of the Enterprise encounters an energy-draining space creature.

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Broadcast: 19 January 1968
Format: Episode Prod #: 048
Writer(s): Robert Sabaroff
Director(s): Joseph Pevney
Story Order: 216 | Correct Order: 49