The Doctor and Adric learn from the wizened Keeper of Traken that a great evil has come to his planet in the form of a Melkur - a calcified statue. The Keeper of Traken is nearing the end of his reign and seeks the Doctor's help in preventing the evil from taking control of the bioelectronic source that is the keystone of the Traken Union's civilisation.
Director: John Black
Writers: Johnny Byrne, Christopher H. Bidmead
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The "Doctor" (Tom Baker) and his new pal "Adric" (Matthew Waterhouse) are parked above the planet of "Traken" when it's throned and elderly keeper visits them in the TARDIS. He's a bit of a harbinger of doom, but still asks the time lord to come to the planet to help avert a bit…
