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The Liberator reaches Space City where Blake seeks the assistance of the Terra Nostra, a criminal group who control the deadly drug Shadow. Blake must find out what the link with the Federation is, and why Orac is telepathically torturing Cally. The key appears to be the planet Zonda.
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: