Investigation Discovery’s new true crime movies—Dating Game Killer and Final Vision—are the latest in a long list of Hollywood productions centering around serial killers. Dating Game Killer concerns Rodney Alcala, a murderer and rapist whose superficial charms landed him an appearance on The Dating Game during his spree. Final Vision, meanwhile, is the story of Jeffrey MacDonald, better known as the Green Beret Killer. In the video above, the stars of the two films—Guillermo Diaz, Scott Foley, Carrie Preston, and Dave Annable—discuss Hollywood’s fascination with serial killers.