Anthony, Edgar, Shamus, Agatha, and Nero award winner Laura Lippman is a top-tier mystery novelist. This thrilling stand-alone mystery reveals the author writing at the top of her game. A tragic school shooting brings to scrutiny the secret troubles of three affluent high school girls, best-friends since the third grade. But as homicide Sgt. Harold Lenhardt's investigation builds momentum, difficult questions arise that must be answered.