After a two-year break, Minneapolis detective Lucas Davenport is back on the force. As Deputy Chief, his first problem is acerbic state investigator Meagan Connell, who is determined to prove a link between a series of particularly brutal attacks on women. The more Davenport looks into it, the more he suspects that Meagan is right to fear the worse. Somewhere out there, spying on his unknowing victims of their most intimate movements, lurks a killer of unusual skill and savagery - and he's only just getting warmed up . . .