They look like a couple of normal, good looking kids, right? Wrong. They are Canadian serial killers. Karla Homolka was convicted of manslaughter in the rape-murder of two teenaged girls, Leslie Mahaffy and Kristen French. Paul Bernardo was convicted of the murders and admitted to having raped numerous women. They were also responsible for the rape-murder of Karla's younger sister Tammy. Karla was given a plea bargain in exchange for testimony against her husband, and served 12 years in prison. There was also evidence that Paul emotionally and physically abused Karla, though why she never tried to leave is a mystery.
The 2006 movie Karla tells the story from Karla's point of view and stars Laura Prepon as Karla and Misha Collins as Paul.