The World's Most Evil Psychopaths: Horrifying True-Life Cases

  Tony Thorne, Countess Dracula: The Life and Times of the Bloody Countess, Elisabeth Báthory. London: Bloomsbury, 1997

  Timeline of Shootings in Montreal, The Toronto Star, 15 September 2006

  Colin Wilson, The Serial Killers: A Study in the Psychology of Violence. London: Allen, 1990

  — and Robin Odell, Jack the Ripper: Summing Up and Verdict. London: Bantam, 1987

  Leonard Wolf, Bluebeard: The Life and Times of Gilles de Rais. New York: Potter, 1980

  Morris Wolfe, Essays, New and Selected. Toronto: grubstreet, n.d

  PICTURE CREDITS

  PLATE SECTIONS:

  Corbis: Dr H. H. Holmes; Henri Landru; Harvey Glatman, Albert deSalvo; Richard Speck, Ed Kemper, Pietro Pacciani; John Wayne Gacy, Gary Ridgway; Aileen Wuornos, Andrei Chikatilo, Jack Unterweger, Jeffrey Dahmer; Andrew Cunanan, Thomas Hamilton, Eric Harris and Dylan Klebold

  Getty: Dr Knox

  Topfoto: Elizabeth Báthory, Burke and Hare; Joseph Vacher; Earle Nelson; Peter Kürten; Ted Bundy

  Barrington Barber: Mary Ann Cotton; Béla Kiss; Carl Panzram; Jerry Brudos

  PA Photos: Clifford Olson

  McCord Museum: Thomas Cream

  Rex: Fritz Haarmann