The Immunity Syndrome
Series: 'The Original Series'
Episode Title: 'The Immunity Syndrome'
Episode Number: 219
Synopsis: "When a huge single-celled alien saps the energy out of an entire solar system, the Enterprise must find a way to stop the creature's progress and prevent it from reproducing."
Original Airdate: January 19, 1968
Written By: Robert Sabaroff
Directed By: Joseph Pevney
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