This imaginative sci-fi series, like many before it, taps into time travel – or, at least, the stream of time – as an inspiration for its narrative. But the scientists of Devs see the time continuum as a natural resource to be tapped and perhaps exploited: mining the past, for sound and images captured like Arctic core samples, and predicting the future, up to a point. It’s fascinating. And, in this telling, spooky and more than a little sinister, as is made clear in