Doctor Who episode 198: Fury from the Deep – Episode 1 (16/3/1968)
A good chunk of this episode feels oddly familiar, like a jumble of influences plundered from other stories. The TARDIS’ arrival on a beach, where the Doctor and his friends much about before getting shot at isn’t a million miles away from The Enemy of the World, and along with the general high security paranoia and the theft of a file by an unseen saboteur suggests this might be another espionage thriller. But then there’s the relationship between Chief Robson, the governor of this base under siege, who’s a familiar General Cutler type: a gruff despot, like Clent or the Gatwick Commandant. And the idea of a monstrous something lurking hidden in the pipes, living on poison gas, is right out of The Macra Terror – with that story’s Controller, Graham Leaman appearing as Price.