Narrator (voice)
Self (as Det. Joe Kozenczak)
Self - Centre for Investigative Psychology, Liverpool University (as Prof. David Canter)
Self - Archivist, University of Michigan
Self - Medical Historian, University of Michigan (as Prof. Howard Markell)
Self - Philadelphia Weekly
Self - Grandaughter of Victim (as Beth Pietzel)
Self - Grandaughter of Victim (as Brenda Pietzel)
Self (archive sound) (uncredited)