Paul Kenneth Bernardo (a.k.a. "The Scarborough Rapist" and "The Schoolgirl Killer") and Karla Leanne Homolka (a.k.a. "The Witch of Ontario") were a formerly married Canadian couple who videotaped themselves as they raped a number of teenage girls, three of whom they also killed. They were nicknamed "The Ken and Barbie Killers" due to their good looks and wealthy background.
