Serial killers: II. Development, dynamics, and forensics

Part I of this two-part article described the demographics, patterns, typologies, and motives of different subtypes of serial killers. Part II describes the development of the serial killer's drives and offense patterns. It discusses the brain mechanisms and dysfunctions that have been purported to underlie this type of extreme crime, as well as the cognitive, psychodynamic, and sociocultural factors that contribute to the development of the serial killer's relentless quest for victims. The article then discusses the practical forensic aspects of theories and knowledge about serial killers, specifically, the efficacy of behavioral profiling of offenders and the relevance of the insanity defense to serial killer cases.