A Life for a Life — Tim Ellis

What starts as a routine stabbing for Detective Inspector Jed Parish and new recruit Police Constable Mary Richards turns into the hunt for a serial killer who uses an unusual weapon to kill, and leaves numbered tokens in his victim's mouths. As well as getting to know each other and dealing with the fallout from the Chief's prostate cancer, the two new partners must discover the dark history behind the tokens and the connection between the victims. To do that, they need to gain access to the abandoned Beech Tree Orphanage where a terrible truth awaits.