Episode 3: "A Third Victim?" -- As the investigation into the suspicious death of Toni continues, Special Agent Shott learns something startling about Harold’s unusual relationship with his sister-in-law. Shott is joined by FBI agent Jonny Grusing who specializes in serial killers. Produced by Lone Wolf Media for ABC News Studios, streaming on Hulu. Learn more about your ad choices. Visit megaphone.fm/adchoices