Gregg O. McCrary

Gregg O. McCrary retired from the FBI’s Behavioral Science Unit after a 25-year career as an FBI Agent.  During his FBI career he investigated and consulted on thousands of cases throughout the United States, Canada, Central America, Europe and Asia.  He has trained law enforcement agencies around the world and provides expert testimony nationally and internationally. 

Agent McCrary, along with co-author Katherine Ramsland, authored The Unknown Darkness, Profiling the Predators Among Us which was published in 2003.  He is also a contributing author to the Crime Classification Manual originally published in 1992 by Lexington Press and contributed a chapter to the book Criminal Investigative Failures published in 2009 by CRC Press.

In addition to providing expert testimony in criminal and civil litigation, Mr. McCrary provides risk of violence assessments and workplace violence prevention training and consultations to national and transnational corporations.  Mr. McCrary is also an adjunct professor of Forensic Psychology at Marymount University in Arlington, Virginia.   He is a member of the editorial review board of two professional journals, The Journal of aggression and Violence and The Journal of Family Violence and currently serves as a research fellow at Texas State University’s Department of Geospatial Intelligence, Investigation, and Homeland Security.  He also actively consults on the Netflix series “Mindhunter”.