Amateur sleuth Sierra Barter grapples with her family's haunting history as she seeks answers to a dark mystery. Joined by her mother Shannon and grandmother Judy, the trio embarks on a courageous quest to uncover whether Jim Mordecai, their husband, stepfather, and step-grandfather, could be a notorious serial killer. Their investigation delves into long-buried secrets that have haunted them for generations, promising revelations that could alter their lives forever. As they confront both the past and present, the truth becomes a catalyst for healing and understanding.