13 April 2013
Liam Cunningham (Captain Zhukov), David Warner (Professor Grisenko), Tobias Menzies (Lieutenant Stepashin), Josh O’Connor (Piotr), James Norton (Onegin), Charlie Anson (Belevich), Spencer Wilding (Skaldak), Nicholas Briggs (Voice of Skaldak)
|Written by||Mark Gatiss|
|Directed by||Douglas Mackinnon|
|Produced by||Denise Paul & Marcus Wilson|
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!