Episode 3
Series Episode Number: 194World Premiere: Sat 17 Feb 1968 - 5:25pm GMT [BBC One] (United Kingdom)
Running Time: 24 minutes 34 seconds
7.00 Million (UK)
Appreciation Index: 51 (UK)Chart Position: 71 () (UK)
Recorded on Sat 27 Jan 1968 in Lime Grove D
Archive State: Missing
The Doctor meets Colonel Lethbridge-Stewart who takes control of the military operation against the Yeti. But the Doctor suspects that there is a traitor in their midst.
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