Serial Killer Edmund Kemper Talks Murder Ed Kemper was 15 when he killed for the first time. His victims were his father's parents. Maude was shot and stabbed, Edmund Sr. was shot in the head. While a juvenile at Atascadero State Hospital, Kemper's IQ was tested at 146. Later Kemper would kill six female university students, giving him the nickname 'The Co-ed Killer.' His murdering rampage came to an end with his mother, when he killed her with a hammer in her sleep. He then slit her throat, rem