Part Two
Series Episode Number: 399World Premiere: Sat 26 Apr 1975 - 5:30pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 20 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 24 seconds
8.30 Million (UK)
Chart Position: 28 () (UK)
Recorded on Tue 03 Dec 1974 in TC1
Sarah is the latest victim of the 'space plague'. But the poison can be removed from her body by transmatting her to the surface of the mysterious planetoid, Voga
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