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The Best Episodes Written By John Mason

Every TV Episode Written by John Mason Ranked from Best to Worst by Thousands of Voters

6.2/1046 votes
6.2/10(46)
#1 - Unnatural Selection
Season 2 Episode 7
Aired 1/30/1989
Stardate: 42494.8. A mysterious hyper-ageing sickness kills the crew of a Federation cargo ship, and Dr. Pulaski must race against time to find a cure.
Director: Paul Lynch
Writer: John Mason
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