Part One
Series Episode Number: 538World Premiere: Sat 22 Nov 1980 - 5:42pm GMT [BBC One] (United Kingdom)
First Broadcast: Sun 6 Dec 1981 - 11:15pm CST [WTTW 11 Chicago]
Running Time: 22 minutes 24 seconds
5.80 Million (UK)
Chart Position: 119 () (UK)
Recorded on Thu 15 May 1980 in Television Centre 3
The TARDIS lands on a world in E-Space where the primitive inhabitants live in fear of the Three Who Rule.
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