The Third Moon of Delta Magna, The Future. The Doctor and Romana arrive in search of the fifth segment and are immediately swept up in a conflict between the crew of a new refinery and the embittered natives…
Quest roles:
John Leeson(K9 (voice)), Terry Walsh(Doran (uncredited)), John Abineri(Ranquin), Philip Madoc(Fenner), Neil McCarthy(Thawn), Carl Rigg(Varlik), Frank Jarvis(Skart), Grahame Mallard(Harg), Mark Hardy(Cyber Lieutenant), Glyn Owen(Rohm-Dutt)