Part One
Series Episode Number: 390World Premiere: Sat 22 Feb 1975 - 5:30pm GMT [BBC One] (United Kingdom)
First Broadcast: Fri 7 Mar 1980 - 5:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 27 seconds
11.00 Million (UK)
Chart Position: 18 () (UK)
Recorded on Wed 02 Oct 1974 in Location (OB)
The Doctor, Harry and Sarah find Earth is a desolate wilderness. They meet a group of stranded human colonists who are being hunted by a robot and experimented upon by its master.
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