Peter Vronsky is the bestselling true crime author of Serial Killers: The Method and Madness of Monsters, Female Serial Killers: How and Why Women Become Monsters, and Sons of Cain: A History of Serial Killers from the Stone Age to the Present. He is an investigative historian, author, filmmaker and new media designer. He holds a Ph.D. from the University of Toronto in criminal justice history and espionage in international relations.