Published Works by Gregg Mccrary


The Unknown Darkness: Profiling the Predators Among Us

Authors: Gregg O. McCrary, Katherine Ramsland; In basement offices three stories below the ground at the FBI’s Academy in Quantico, Virginia, former Supervisory Agent Gregg McCrary was among the first generation of the most elite force for criminal investigation in the world. In The Unknown Darkness, McCrary takes the reader behind the crime scene to […]