Forensic Files

On Halloween night 2004, Adriane Insogna and Leslie Mazzara were brutally murdered in their Napa, California home. The killer was not seen by their downstairs roommate, but he left his DNA behind in some cigarette butts and a groundbreaking test revealed his race and even the color of his eyes and hair. When this information was made public, Eric Copple went to the police and confessed.