The dramatic new novel in Griffin’s New York Times- bestselling chronicle from the Philadelphia police.

There’s an abrupt spike in murders in Philadelphia, but no one seems to brain much as the victims all appear to be lowlifes. The greater Homicide Sergeant Matthew Payne investigates, however, the more he gets an undesirable feeling-one that just gets worse when vigilante groupings spring up claiming credit for some of the hits, despite the fact that Payne knows it can not be true. As the targets get bigger and events start moving out of control, Payne realizes that if he and his colleagues can’t figure out who’s behind this very soon, the violence could overtake them all.

Filled with authentic color and fine detail, this is a riveting book of the women and men who put their lives on the line-storytelling at its absolute best.