What drives serial killers to commit their horrific crimes? Are sex crimes really motivated by sexual desire? Why do some killers stop killing, while others escalate? The science of personality theory has advanced dramatically in recent years, shedding new light on the inner workings of these criminals. All human behavior exists on a continuum, and through the study of extreme behaviors, any behavior becomes a little more understandable. Learning...

"During his twenty-five year career with the Investigative Support Unit, Special Agent John Douglas became a legendary figure in law enforcement, pursuing some of the most notorious and sadistic serial killers of our time: the man who hunted prostitutes for sport in the woods of Alaska, the Atlanta child murderer, and Seattle's Green River killer, the case that nearly cost Douglas his life. As the model for Jack Crawford in The Silence of the Lambs,...