Many people are both repelled and intrigued by the images of cold-blooded, conscienceless murderers that increasingly populate our movies,, television programs, and newspaper headlines. With their flagrant criminal violation of society's rules, serial killers like Ted Bundy and John Wayne Gacy are among the most dramatic examples of the psychopath. Presenting a compelling portrait of these dangerous men and women based on 25 years of distinguished scientific research, Dr. Robert Hare vividly describes a world of con artists, hustlers rapists, and other predators who charm, lie, and manipulate their way through life. Are psychopaths mad or simply bad?