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The TARDIS brings the Doctor, Victoria and Jamie to the coast of England, where the ESGO complex is drawing up natural gas from the North Sea. But the Doctor is convinced he can hear something in the pipes, a heartbeat, something - alive?
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Episode 1
26 mins
The Doctor, Jamie and Victoria are taken prisoner by the staff of a gas refinery, who have lost contact with their drilling rigs and experienced mysterious drops in pressure.