Episode Five
Series Episode Number: 316World Premiere: Sat 25 Mar 1972 - 5:45pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 21 Nov 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 53 seconds
8.30 Million (UK)
Chart Position: 39 () (UK)
Recorded on Mon 13 Dec 1971 in TC8
Archive State: PAL 2 VT
The Doctor is captured by the Sea Devils and taken to their undersea base. There he tries to make peace with the creatures, but his efforts are thwarted by the Navy.
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