What makes a person walk into a theater or a church or a classroom full of students and open fire? What combination of circumstances compels a human being to commit the most inhuman of crimes? Can science in any way help us understand these horrific events and provide clues as to how to prevent them in the future?

Otto Wirths was the second-worst mass murderer in the history of the world. Compared to him Hitler, Stalin, Attila the Hun, and even Alexander the Great were amateurs, poseurs who could not hold a candle to Otto and his body count.

"Psychologist Alex Delaware and detective Milo Sturgis struggle to make sense of a seemingly inexplicable massacre in this electrifying psychological thriller from the #1 New York Times bestselling master of suspense. LAPD Lieutenant Milo Sturgis has solved a lot of murder cases. On many of them--the ones he calls "different"--he taps the brain of brilliant psychologist Dr. Alex Delaware. But neither Alex nor Milo are prepared for what they find on...

Charles Manson had one goal: to become a rock star. Told by those who were there, witness his obsession to audition for the Hollywood elite such as Terry Melcher and Dennis Wilson, how the Beatles' Helter Skelter motivated his race wars, how the Byrds, the Beach Boys, and Bob Dylan influenced the music he used to seduce his followers, and his spiral into violence over a failed musical career.

Years after the shocking murders that made the name Charles Manson synonymous with pure evil, the three women killed for him, Leslie Van Houten, Patricia Krenwinkel, and Susan Atkins, remain under the spell of the infamous cult leader. Confined to an isolated cellblock in a California penitentiary, the trio seems destined to live out the rest of their lives under the delusion that their crimes were part of a cosmic plan until empathetic graduate student...