Serial killers, rapists, and criminals exert a strong fascination that is reflected in books, films, or television series. In fact, psychopaths in modern societies are often very successful - social chameleons who go unrecognized and skillfully manipulate and harm those around them. Forensic psychiatrist Robert I. Simon shares insights from his extensive experience with 'evil people.' He also illustrates the fine line between their actual acts of violence and the dreams of everyone else. Only by approaching 'evil' with empathy and understanding why some individuals' defense mechanisms fail can one better recognize oneself and their own dark side.