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The Doctor and Clara land on a damaged Russian submarine in 1983 as it spirals out of control into the ocean depths. An alien creature is loose on board, having escaped from a block of Arctic ice. With tempers flaring and a cargo of nuclear weapons on board, it’s not just the crew but the whole of humanity at stake!
First Air Date : Mar 26, 2005
Last Air date : Dec 05, 2021
Episode : 153 Episode
Season : 13 Season
Runtime: 26:14 minutes
Studio: BBC One
Country: Canada, United Kingdom
