Robert K. Ressler (1937-2013) was an expert in the area of violent criminal offenders and a twenty-year veteran of the Federal Bureau of Investigation. He innovated many of the programs which led to the formulation of the FBI's National Center for the Analysis of Violent Crime.
Tom Shachtman has written or coauthored more than thirty-five books, including Gentlemen Scientists and Revolutionaries, Rumspringa, and Absolute Zero and the Conquest of Cold. He has also written documentaries for ABC, CBS, NBC, PBS, and the BBC.
An award-winning audio engineer for over forty years, Tom Perkins has expanded his skills to narrating and has more than sixty titles to his credit. He learned by working with the world's best voice talent during his career, and he continues to engineer a variety of projects.