Part Four
Series Episode Number: 405World Premiere: Sat 20 Sep 1975 - 5:22pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 28 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 25 minutes 22 seconds
7.20 Million (UK)
Chart Position: 45 () (UK)
Recorded on Wed 23 Apr 1975 in TC 4 at these locations
BBC Genome Project: see entry
Broton the Zygon warlord, disguised as the Duke of Forgill, intends to use the Skarasen to attack the World Energy Conference in London.
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