"Detectives Byrne and Balzano return to the streets of Philadelphia to put an end to a macabre succession of murdered children. A quiet Philadelphia suburb. A woman cycles past a train depot with her young daughter. There she finds a murdered girl posed on a newly painted bench. Beside her is a formal invitation to a tea dance in a week's time. Seven days later, two more young victims are discovered in an abandoned house, posed on painted swings....

Billy is an excellent killer: strategic, methodical, ritualistic. If only he knew what his victims looked like. While Billy stalks Philadelphia, Detective Kevin Byrne is assigned to a series of bizarre home invasion cases and is joined by his former partner - turned - assistant district attorney, Jessica Balzano. Their investigations circle Byrne's childhood neighborhood of Devil's Pocket, and they find themselves revisiting a crime from Byrne's past...

It is fall in Philadelphia and the mutilated body of a man has been found in one of the poorest neighbourhoods. When homicide detectives Kevin Byrne and Jessica Balzano investigate, they soon realise that their crime scene is linked to an unsolved case. Eight years ago, another body was found in the same position, killed in the same manner. Apart from this killer's unusual calling cards, the crime scene photos are identical. As another body appears,...

Nothing will ever be the same again . . . In the heart of Philadelphia's badlands, Homicide Detectives Byrne and Balzano are called out to a particularly chilling crime scene. Once the pillar of the neighbourhood, an abandoned church has become a killing room. At first it looks like a random act of violence. But then a second body is found, and a third. Each crime scene more disturbing than the last, each murder more brutal. And it soon becomes...