Doctor Who: Fury from the Deep

'It's down there. In the darkness. In the pipeline. Waiting.' The TARDIS brings the Doctor, Jamie and Victoria to the south coast of present-day Earth. Something nasty is lurking in the gas pipelines of the North Sea, and before long the nearby refinery is under attack. Landing on a foam-covered beach, the travellers are at first mistaken for saboteurs. A number of the refinery personnel have been behaving strangely, and the base chief, Robson, is showing serious signs of stress. Meanwhile ...