Natalie Finn weighed just 81 pounds when she died of cardiac arrest in October 2016. The 16-year-old and her two adopted siblings were locked in a small room in a Des Moines home while they were subjected to unimaginable torture and neglect. Nancy Grace explores the case against their parents who starved the teen daughter to death. She is joined by forensics expert Joseph Scott Morgan, juvenile Judge Ashley Willcott, forensic psychiatrist Dr. Daniel Bober, and reporter John Lemley.