I found the following at another site without a link, so I searched it and found the original author and the entire article. I'm bringing it here as I feel it's extremely relevant to this case. The author is Daniel Collazzi, a forensic biologist: Violent offenders who rape their victims fall into different categories. These are different types of rapists, who rape for different reasons and do it in different ways. Nonetheless, they are all monsters. Profiles created for each kind of rapist can be used to track down and punished the different types of rapists accordingly. The Power Reassurance Rapist is the most common type of rapist. He usually will carry a weapon or claim to be, but will not use it or use any more force than necessary to fulfill his fantasy. He wants to express his power through sex, not physical injury. This offender spends an extended period of time with the victim, may compliment her appearance, and may even apologize for what he has just done to her. The Power Assertive Rapist is primarily concerned with showing how "manly" he is through extreme violence. Unlike the Power Reassurance Rapist, this one is not concerned with the extent of suffering of the victim and usually uses more force than necessary to subdue her. The Anger Retaliatory Rapist is even more violent. He has a deep hatred towards women and so lashes out against them. Many of his victims require hospitalization. The Anger Excitation Rapist or sexual sadist is sexually stimulated by the amount of suffering his victim endures. He is the most dangerous type of rapist. The Opportunistic Rapist will rape someone during another crime taking place, for instance, a robbery or kidnapping. He does not spend very much time with the victim and is usually either high or drunk during the ordeal. http://www.bxscience.edu/publications/forensics/articles/psychologicalprofiles/f-psyc01.htm Edited to add........there's a lot more at the link on criminal behavior. The portion above is only a small snip of the article - the portion that deals with rapists.