In 1960s London, a female contract killer goes after a depraved aristocrat in a quest to save his trafficked victims . . .

In 1961, George Preston is in control of crime in West London, and Rina Walker is his favoured contract killer. When Rina is hired by a Soho vice king to investigate the disappearance of girls from his clubs, she discovers that they're being supplied to a member of the English aristocracy for the gratification of his macabre tastes.

Soon, 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 tries to survive a confrontation with depravity . . .