October 1940. The Blitz bombing raids continue mercilessly, but when the body of a kitchen porter from Claridge's hotel is found, it is clear that he has not been the victim of a blast: he was strangled. Detective Chief Inspector Coburg has to find out exactly who he was, and what he was doing at Claridge's under a false identity. Armed with those facts, he might get an insight into why he was killed, and by whom.

But the investigation is complicated by the fact that so many of the hotel's residents are exiled European royalty. Clandestine affairs, furtive goings-on and conspiracies against the government: Coburg must tread very lightly indeed .