Jonathan Kellerman, America's foremost author of psychological thrillers, turned from a distinguished career in child psychology to writing full-time. His works include ten previous Alex Delaware books--When the Bough Breaks, Blood Test, Over the Edge, Silent Partner, Time Bomb, Private Eyes, Devil's Waltz, Bad Love, Self-Defense, and The Web--as well as the thriller The Butcher's Theater, two volumes of psychology, and two children's books. He and his wife, the novelist Faye Kellerman, have four children.