Part Three
Series Episode Number: 556World Premiere: Mon 11 Jan 1982 - 6:55pm GMT [BBC One: Not Wales] (United Kingdom)
First Broadcast: Thu 9 Apr 2015 - 8:00pm EDT [Retro TV]
Running Time: 23 minutes 35 seconds
10.20 Million (UK)
Chart Position: 47 () (UK)
Recorded on Tue 29 Sep 1981 in Television Centre 3
Something is wrong with Castrovalva, but the Portreeve cannot help the Doctor identify the problem. And the Master is taunting Adric, caught in his web of power�
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