In 2013, a quiet Massachusetts town was shaken by the brutal murder of beloved high school teacher Colleen Ritzer. Her killer was one of her own students—14-year-old Phillip Chism. This shocking case raised chilling questions about violence among youth, the warning signs that were missed, and how such a tragedy could unfold inside the walls of a school. In this episode, we dive into the life of Colleen Ritzer, the details of that devastating day, the investigation that followed, and the trial that gripped the nation.