Cold Kill — David Lawrence

The brutalized corpse of a young woman has just been discovered. When Robert Kimber walks into a Notting Hill police station and confesses to the murder, it's an open-and-shut case--just what the police want this close to Christmas. But Stella has her doubts. And if their suspect didn't commit the murder, who did? Someone without a conscience. Someone who will tap into Kimber's disturbed mind. Someone who needs an apprentice for the dark business he has planned....