Vila	Michael Keating
Avon	Paul Darrow
Cally	Jan Chappell
Dayna	Josette Simon
Tarrant	Steven Pacey
Zen	Peter Tuddenham
Orac	Peter Tuddenham
Servalan	Jacqueline Pearce

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Dayna and Tarrant teleport to the pacifist planet Obsidian to negotiate a neutral base, but Servalan intends to capture the Liberator. A crack force teleports aboard, but Avon outmanoeuvres them and destroys the attacking Federation ships. The troops retreat, taking Cally. Obsidian's leader, Hower, reveals that the Federation has been kept at bay by a nuclear device and he now threatens to use it ...

Synopsis taken from TV ZONE SPECIAL issue 30.

 

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