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!
Genres: Action & Adventure , Drama , Sci-Fi & Fantasy
Keywords: alien , time-machine , time-travel , watch-series-online