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!

‘Cold War’ airs at 6pm on Saturday 13 April on BBC One. To whet your appetite, here are ten teasing lines of dialogue from the episode…

» “The signal is genuine.”

» “This means nothing to me…”

» “Professor, I could kiss you.”

» “Karaoke? Hen night?”

» “Everything’s bigger.”

» “It’s not a mammoth, no.”

» “We go way back, way back.”

» “This is a soldier and it deserves our respect.”

» “Oh look, you’ve got me telling you about them and I said there wasn’t time.”

> Order Series 7 Part 2 on DVD on Amazon.

> Buy Series 7 Part 1 on DVD on Amazon.

Watch the Series 7 Part 2 trailer…

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