Forensic psychology professor Katherine Ramsland has penned more than 70 books on crime, forensic science and criminal justice.
Her latest work, The Serial Killer's Apprentice, tells the bizarre story of 14-year-old Elmer Wayne Henley Jr, who was groomed by a serial killer into becoming his protege.
Speaking to Crime Worlds Clodagh Meaney at CrimeCon, Katherine details working with serial killers and a relationship with Wayne Henley.
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