But it’s the mystery surrounding an unidentified female corpse left exposed in the woods for over a year that really has the detectives worried. Whoever she might have been, the dead woman is linked to the mystery caller, whose description of his twisted death rituals matches the bizarre manner in which the body was found. And the mystery only deepens when Cooper obtains a positive I.D. and learns that the dead woman was never reported missing and that she definitely wasn’t murdered. As the killer draws them closer into his confidence, Ben and Diane learn everything about his deadly obsessions except what matters most: his identity and the identity of his next victim. . . .