Ed Kemper

At the age of 15, Ed Kemper murdered his paternal grandparents. After he came out on parole at the age of 21, he went on to kill six college students, his mother and her best friend. He was also a prolific audiobook narrator and he has several hundred completed recordings to his name. He once buried one of his victim's severed head in his mother's garden as a joke and later remarked that his mother “always wanted people to look up to her.” On one occasion, when he was left alone in a cell with FBI agent Robert Ressler, who was interviewing him, Ed started taunting him, implying that he was going to murder him. Once the guards returned, Ed told Ressler that he was "just kidding."