Actors Frazer Hines (Jamie), John Levine (Yeti), Derek Martin (Soldier), Tina Packer (Anne Travers) and Ralph Watson (Captain Knight) with radiophonic sound designer Brian Hodgson, make-up designer Sylvia James and Tim Woolgar (son of actor Jack Woolgar (Staff Sgt Arnold)) recall the production of this serial.

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Main Cast: Frazer Hines, Sylvia James, John Levene, Ralph Watson, Derek Martin, Tina Packer, Tim Woolgar, Brian Hodgson

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