Part Three
Series Episode Number: 486World Premiere: Sat 14 Oct 1978 - 6:21pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 29 Dec 2000 - 10:30pm CST [Prairie Public Television]
Running Time: 25 minutes 47 seconds
8.20 Million (UK)
Appreciation Index: 64 (UK)Chart Position: 44 () (UK)
Recorded on Sat 03 Jun 1978 in Television Centre 6
The Doctor has discovered the sinister truth about Zanak and solved the mystery of the missing planet. On the Bridge, the Doctor meets the real ruler of Zanak.
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