Impossible murders.Victims found dead with no sign of their invisible tormentors or any clue as to how they died.As chill air and dark mist rolls over the canals and the nights lengthen, Sophie Quinn, internationally famous magician turned FBI consultant, and her partner, FBI Agent Jonathan Greer, find themselves face to face with a series of haunting deaths that challenge every instinct and make them question whether the spectral entity claiming lives along the shadowy waters of New Orleans is even human.With the thread of the River Killer's trail slipping through her fingertips, Sophie finds an unlikely ally, even as her life unravels around her. But the insidious and lethal threat of Silas Hitchens is coiling ever tighter, and Sophie and Greer soon realize they must find a way to save not only their careers but their lives.