Cold echo / CJ Carver.

"Should you trust your best friend with your life? Harry, Lucas and Guy were best friends when they were kids. But then they made a terrible mistake and their friendship shattered, forcing them to cut all ties. Years later, a man's head is discovered in the woods, skinned and with the tongue cut out. The police call on Harry, a psychologist, to help with the case, and when it turns out the victim is his childhood friend Guy, old skeletons begin to surface. Then one of Harry's clients goes missing. Forced into a desperate hunt to save the boy, Harry finds himself closing in in on a shocking secret, a secret someone will do anything to keep safe..."--Provided by publisher.