Revenge - how long would you wait? Eight-one-year- old Eddie Wakefield is found brutally murdered in his London nursing home - the number 15 crudely carved into his flesh. As more victims are discovered, Jack and his team must find the significance of the number 15 before it's too late.

He's back! The same killer. The same clues. But this time it is DI Jack MacIntosh on the hunt. In the summer of 2009, four young women are brutally murdered in their own homes. The killer is dubbed The Bishop due to the wooden carvings left on each victim's body. The case is never solved. Four years later and the killings begin again, this time on Detective Inspector Jack MacIntosh's patch. And this time, the killer must be stopped. But who is he? An explosive page-turner you just can't miss!

Two grisly murders. Three days apart. One brutal killer? Nicki and her team embark on another complex investigation - with a shocking and unexpected end...