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The Liberator crew journey to a planet where a friend of Avon's works, in order to get TP crystals. The derelict spaceship K-47 is retrieved, and an on-board virus spreads throughout the complex.
First Air Date : Jan 02, 1978
Last Air date : Dec 21, 1981
Episode : 52 Episode
Season : 4 Season
Runtime: 50:14 minutes
Studio: BBC One
Country: