Detective Inspector Ruth Hunter lives with the pain of her partner's mysterious and unsolved disappearance. About to hit fifty, the veteran police officer trades in the crime-ridden streets of London for a more peaceful life in rural North Wales. But Ruth has barely settled into her new position in North Wales Police, when the body of a brutally murdered woman is discovered... with strange symbols carved into her skin. Teaming up with an obstinate deputy, Ruth struggles to eliminate anyone from a long line of suspects. When another slain victim is discovered with the same cryptic markings, she's forced to re-think the investigation. Has Ruth got what it takes to solve the case before the murderer attacks again?