Former FBI (22 years) Supervisory Agent with the Behavioral Science Unit, FBI Academy. Former Major, United States Military Police Corps. National authority on crimes of violence. Has personally interviewed incarcerated sexual offenders responsible for over 800 rapes. Conducted extensive research on violent crimes. Published more than 40 journal articles and co-authored five books. Consults on cases of homicide, equivocal death, autoerotic fatalities, rape, child abduction and molestation, other dangerous and aberrant behavior throughout North America, Europe, and Latin America. Testified as an expert witness in federal, state, county and municipal courts, before a Presidential committee, and before committees of both Houses of Congress. Internationally recognized author and speaker.
