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Narrated by: Caroline John, Full Cast, Jon Pertwee

Unabridged — 3 hours, 16 minutes

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Overview

Seven months after it left the red planet, Mars Probe 7 still hasn't returned to Earth. The Doctor and Liz Shaw join the investigation as a second capsule, Recovery 7, is sent to discover what has happened. But when it returns, something is terribly wrong with its three astronauts... The space-suited figures are kidnapped and Brigadier Lethbridge-Stewart leads UNIT in a rescue attempt - whilst Liz finds herself at the mercy of dangerous fanatics. Only a solo space flight by the Doctor can b...