"In this latest thriller by New York Times bestselling Jonathan Kellerman, psychologist Dr. Alex Delaware confronts an almost unimaginably cruel, arrogant, and obsessed killer who takes as much pleasure in matching wits with the police as in robbing human life--all in the name of science.The slightly retarded fifteen-year-old daughter of a diplomat dies on a school field trip--forced or lured into a deserted corner of the Santa Monica mo ..."