Cults today are bigger than ever, with broad ramifications for national and international terrorism. In this newly revised edition of her definitive work on cults, Singer reveals what cults really are and how they work, focusing specifically on the coercive persuasion techniques of charismatic leaders seeking money and power. The book contains fascinating updates on Heaven's Gate, Falun Gong, Aum Shinrikyo, Hare Krishna, the Reverend Sun Myung Moon, and the connection between cults and terrorism in Al Queda and the PLO.

Margaret Thaler Singer is a clinical psychologist and emeritus adjunct professor at the University of California, Berkeley. In her career she has counseled and interviewed more than 3,000 current and former cult members and their relatives and friends. An expert on post-traumatic stress as well as cults, she lectures widely in the United States and abroad. She is the coauthor of "Crazy" Therapies.