Nude Celebs: Laura Prepon - Based on the grisly true story of Canadian serial killer Karla Homolka, this disturbing shocker follows the attractive, young Karla (Laura Prepon) as she enjoys a sadomasochistic love affair with Paul Bernardo. Soon, the "Ken and Barbie Killers" embark on a monstrous spree of sexual assaults and murder during the 1990s. Kristen Swieconek, Fiona Manners, Cherilyn Hayres also star.