The first of the three chapters devoted to serial killers, on the concept and history, focuses on differences between serial killers who are psychotic and disorganized and those who are psychopathic and organized. I would have appreciated knowing the credentials of the author, who is associated with a center for the study of violence in Spain. A chapter on the motives of the serial killer is by a criminologist. The third chapter in this section addresses the interrelationships of psychopathy, sadism, and serial killing. The author, whose qualifications are not given, argues for the concept of sadistic personality disorder, which is not in the DSM system, although sexual sadism is.