Robot freighters are being sabotaged by a shoddy space salvage company, and Steve Zodiac is determined to find the proof he needs to bring the sleazy brothers to justice.
Gerry Anderson
Robert the Robot (voice) (uncredited)
David Graham
Lieutenant Ninety (voice)
Sylvia Anderson
Doctor Venus (voice)
Paul Maxwell
Colonel Steve Zodiac (voice)
John Bluthal
Commander Wilbur Zero (voice)