The murder of third grade teacher Jocelyn Peters baffled investigators in St. Louis, Missouri, from the start. The crime scene contained unusual clues, such as potato fragments splattered near the victim, and the behavior of a person of interest before a police interview caught detectives’ attention. Why did this man eat pages from a notebook when facing questions about Jocelyn’s murder? What did investigators believe the notebook might reveal?

The show’s own verdict is on its page.