"The Planet Obsidian offers the Liberator's crew allies and a safe base, but has a deadly secret."
Synopsis from The Sydney Morning Herald (Sydney) Television Guide, 15 June 1980
 

Join us for a discussion of the third episode of Blakes 7 Series C, first broadcast January 21 1980.

(First screened in Australia on Friday, 20 June 1980 at 7:30 pm)