The Leisure Hive: Part Three
Doctor Who: Season 18, Episode 3
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The Tachyon Generator has aged the Doctor into a white-haired old man, but he discovers the truth behind the machine and uncovers a plot to take control of the Hive.
Show: Doctor Who
Written by: David Fisher
First broadcast: 30 August 1980
Last broadcast: 20 September 1980
Music by: Peter Howell
Production code: 5N
Script editor: Christopher H. Bidmead