Edmund Kemper's mother locked him in the basement every night through a trapdoor hidden under the kitchen table. He was 10 years old. He could hear rats running around him in the dark. At 13, he was burying cats alive and digging them up to play with. At 15, he shot and killed both his grandparents. When asked why he killed the grandfather, he said: "I didn't want him to suffer knowing his wife was dead." They sent him to a psychiatric hospital for the criminally insane. He was the youngest patient there. The staff loved him - smart, cooperative, polite. They made him a trusted assistant and gave him access to every sex offender's case file in the building. Detailed methods. Techniques of deception. How they selected victims, how they avoided detection. He memorized all of it. After 5 years, the doctors believed they had cured him. They released him at 20 with one condition: do not place him with his mother. The youth authority ignored it and sent him straight to her doorstep. Within two years, six college girls vanished across Santa Cruz. Body parts washed in from the ocean. Severed heads were found in the mountains. Police had no suspect, no pattern, no leads. They named the unknown killer the Co-Ed Butcher and launched the biggest manhunt in the county's history. Every night after work, the detectives hunting the Co-Ed Butcher went to a bar called The Jury Room. A friendly regular they called Big Ed would sit with them, buy rounds, ask about the case. Great personality. Likable guy. 6'9", 280 pounds. Big Ed was Edmund Kemper. He was sitting with them discussing his own murders while the victims' remains were still in his car. One morning at 5AM, a cop picked up the phone. It was Ed, calling from a phone booth in Colorado. He hadn't slept in days. He said he had killed his mother, her best friend, and every single missing co-ed. The police who spent months hunting the most terrifying serial killer in California had been drinking beers with him the entire time. He was never caught. He gave himself up. Not because he felt guilt - but because after killing his mother, there was no one left to kill for.