A serial sex-killer who preys on vulnerable young women is loose in Minneapolis, and state investigator Meagan Connell suspects he's a cop. At first, Lucas Davenport doesn't believe her theory. But there is something familiar about the vicious stab wounds on these bodies that teases his memory. Somewhere in the city lurks a killer of unusual skill and savagery. If Davenport is right, the killings have just begun.