Part Four
Series Episode Number: 389World Premiere: Sat 15 Feb 1975 - 5:31pm GMT [BBC One] (United Kingdom)
First Broadcast: Thu 6 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 37 seconds
10.20 Million (UK)
Chart Position: 24 () (UK)
Recorded on Tue 12 Nov 1974 in TC1
The mutated Noah has now fully transformed into a Wirrn adult and intends to allow the Wirrn to devour the sleeping humans, absorbing their memories and knowledge.
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