Stabbed, and covered in blood, a young woman dies in the arms of Father O'Connor. Then, Sally Ferguson and her playmate, Liam Findley, go missing. When Liam's body is discovered on farmland, the police go looking for Percy Grimes. They find Percy's mutilated body, and a strange white rose. For DCI Fletcher and his team, this is the start in a series of murders. As the bodies pile up in the mortuary, he enlists the help of American, Scott Holden, a Criminal Profiler. Scott, knows the rose is the signature of a serial killer. Somewhere, out there, a vigilante, is... hunting!