Residents are struck with fear when the strangled body of 21-year-old Susan Schumake is found in Carbondale, Illinois. Lack of evidence stumps cops for more than two decades, but new technology leads detectives in a direction they never expected.Season 2, Episode 7 originally aired on ID on 3/25/2012Stream full episodes of Nightmare Next Door on discovery+. Go to discoveryplus.com/nightmarenextdoor to start your 7-day free trial today. Terms apply. See acast.com/privacy for privacy and opt-out information.