The sexuality of the serial, psychopathic, killer is self-directed. His victims are props, extensions, aides, objects, and symbols. He interacts with them ritually and, either before or after the act, transforms his diseased inner dialog into a self-consistent extraneous catechism. The narcissist is equally auto-erotic. In the sexual act, he merely masturbates with other - living - people's bodies. (From the book "Malignant Self-love: Narcissism Revisited" by Sam Vaknin - Click on this link to purchase: http://www.narcissistic-abuse.com/thebook.html)