Edmund Kemper killed ten people between 1964 and 1973, starting with his grandparents as a teenager and ending with his own mother, a pattern investigators only reconstructed after his confession. This documentary traces the case now known by the press label "Co-ed Butcher," built around the young women he picked up hitchhiking near Santa Cruz, killed, and dismembered. It moves through police records, crime scene details, and Kemper's own chillingly articulate account of what he did and why, an account he gave voluntarily once he decided to turn himself in. The film treats him less as a mystery to solve than as a case study in how a killer this obviously disturbed evaded suspicion for years while local police were focused elsewhere. It stays with the practical facts of the investigation and the victims rather than dramatizing the violence, and lets Kemper's own words carry much of the weight of explaining what happened.