“Under the Lake” also dips into another familiar Who well, and that’s the ghost story. Of course, the thing with Doctor Who ghost stories is that they never, ever turn out to be actual ghosts; instead, typically aliens of some kind. To be fair to “Under the Lake” and its writer Toby Whithouse, there’s an effort here to make these projections actual ghosts, despite the knowledge early on that they’re products of alien technology. The Doctor in one scene asserts that they’re “unnatural — an aberration; you live and then you die.” Later on he accuses the unknown aliens of “hijacking souls,” which I’m unsure makes much sense (it certainly doesn’t to an atheist like me).
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