London during the dark days of the Blitz: a city outwardly in ruins, weakened by exhaustion and rationing. But behind the blackout, the old way of life continues: in the music halls, pubs and cafes, soldiers mix with petty crooks, scandal-hungry reporters with good-time girls - and DCI Edward Greenaway keeps a careful eye on everyone. Out on the streets, something nastier is stirring: London's prostitutes are being murdered, their bodies left mutilated. And in the shadows Greenaway's old adversaries in organised crime are active again. Greenaway must use all his skill - and everything he knows about the city's underworld - to stop the slaughter.