Episode 4
Series Episode Number: 201World Premiere: Sat 6 Apr 1968 - 5:15pm BST [BBC One] (United Kingdom)
Running Time: 24 minutes 17 seconds
6.60 Million (UK)
Appreciation Index: 56 (UK)Chart Position: 62 () (UK)
Recorded on Sat 16 Mar 1968 in Lime Grove D
Archive State: Missing
Investigating the impeller shaft, Van Lutyens is overwhelmed by the weed creature. A call comes from one of the off-shore rigs � the weed creatures are attacking and taking over!
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