London, 1961. In the dying days of the Macmillan government, George Preston is in control of crime in West London, and Rina Walker is his favoured contract killer. When Rina is hired by Soho vice king Tony Farina to investigate the disappearance of girls from his clubs, she discovers that they are being supplied to a member of the English aristocracy for the gratification of his macabre sexual tastes. Rina's pursuit of the missing girls and her efforts to save the innocent from slaughter become increasingly perilous as she grapples with interwoven layers of corruption and betrayal and makes her way, via the louche nightclubs of Berlin, towards a final confrontation with depravity.