PETER VRONSKY is an author, filmmaker, and forensic-investigative historian. He holds a Ph.D. from the University of Toronto in the history of espionage in international relations and criminal justice history. Peter Vronsky is the author of a series of books on the history serial homicide: Serial Killers: The Method and Madness of Monsters (2004); Female Serial Killers: How and Why Women Become Monsters (2007); Sons of Cain: A History of Serial Killers From the Stone Age to the Present (2018)- a New York Times Editors' Choice; and most recently, American Serial Killers: The Epidemic Years 1950-2000 (2021). He is also the author of Ridgeway: The American-Fenian Invasion and the 1866 Battle that Made Canada, the definitive history of Canada's first modern battle and the subject of his 2010 doctoral dissertation at U of T. He lives in Toronto and Venice, Italy.