From the outside looking in, the relationship between Paul Bernardo and Karla Homolka was picture-perfect. A beautiful young couple with their whole lives ahead of them. Behind closed doors was another story. Paul, a budding psychopath who already had a string of serial rapes under his belt. Karla, deranged and eager to offer up her younger sister and other young women to be raped and murdered. Adding to the distressing nature of their crimes is their twisted obsession with filming and re-enacting them. These tapes were ultimately their downfall, with speculation that Karla received a lenient sentence for providing information about Paul. The real question is, who was the ring leader in these horrendous events, and why?