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The Mutants: Episode Four
Last updated 02 January 2017
7:00pm PDT (02:00 GMT) < > « »
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Featuring: Jon Pertwee, Katy Manning, John Hollis, Paul Whitsun-Jones
The Doctor deduces the true meaning of the ancient carvings and must brave the intense radiation of the thaesium caves to retrieve a crystal.
Synopsis Source: Doctor Who Guide
Broadcast Source: BroaDWcast