Thomas A. Reppetto is a former commander of detectives in the Chicago Police Department. After earning a doctorate from Harvard University he served as professor, dean, and vice president at the John Jay College of Criminal Justice in New York Cty. From 1979 to 2005 he was the head of the Citizens Crime Commission of New York City and was named New York State Governor’s Law Enforcement Executive of the Year in 1986. His books include American Mafia: A History of Its Rise to Power and Battleground New York City: Countering Spies, Saboteurs, and Terrorists since 1861 (Potomac Books, 2012), among others.