Part Four
Series Episode Number: 487World Premiere: Sat 21 Oct 1978 - 6:22pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 5 Jan 2001 - 10:30pm CST [Prairie Public Television]
Running Time: 25 minutes 16 seconds
8.40 Million (UK)
Appreciation Index: 64 (UK)Chart Position: 46 () (UK)
Recorded on Sun 04 Jun 1978 in Television Centre 6
Time is running out for the Doctor and Romana in their struggle to defeat the Captain. They join forces with the Mentiads to prevent the Captain and Xanxia from using Zanak to consume Earth.
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