Jack Levin is the Irving and Betty Brudnick Professor of Sociology at Northeastern University. His research interests include, criminology, murder, prejudice and hate, and social psychology. Dr. Levin's other books include The Violence of Hate, Why We Hate, The Will to Kill: Making Sense of Sensleless Murder (with James Alan Fox), and Extreme Killing: Understanding Serial and Mass Murder (with James Alan Fox).

James Alan Fox is the Lipman Family Professorof Criminal Justice and Professor of Law, Policy, and Society at Northeastern University. He is the author or co-author of sixteen books including Will to Kill and Extreme Killing (both with Jack Levin); winner of the 2007 Hugo Adam Bedau Award for excellence in capital punishment scholarship; and a former Visiting Fellow with the Bureau of Justice Statistics of the U.S. Department of Justice.

David Forde is Professor and Graduate Director in the Department of Criminal Justice at the University of Alabama. His principal research activity has been collecting survey and evaluation data on issues of criminal victimization and trauma. Dr. Forde is a current advisor to the National Institute for Law and Equity and a past advisor to the Memphis Shelby Crime Commission on best practices to reduce crime.