Sam Riley is living in Nazi London in this adaptation of Len Deighton’s novel.

Imagine a world in which Hitler has won World War Two and the Nazis rule London… that’s the nightmarish scenario behind this excellent five-part thriller starring Sam Riley as Scotland Yard cop Douglas Archer.

The detective is trying to carry on as normal, but his cosy life is shaken up when he’s called in to investigate a strange murder. Is it linked to the British Resistance? Why are the Nazis in Berlin so interested? And why did US journalist Barbara Barga (Kate Bosworth) flee the scene?

Riley is compelling as a man who must finally decide which side he’s on, while the alternate-history backdrop is suitably chilling.