Alexis and Billy track down Jason's mother, who shares the tumultuous backstory of her son's upbringing, including the revelation that he started stalking his first victim in the fourth grade. To follow the Unraveled investigations even further, stream the specials exclusively on discovery+. Go to discoveryplus.com/unraveled to start your 7-day free trial today.* *discovery+ is currently only available for US subscribers. See acast.com/privacy for privacy and opt-out information.