Upon interviewing Kemper years later, FBI profiler John E. Douglas – began to learn why Kemper had felt the compulsion to murder his mother.
What the profilers learned while interviewing Kemper – as well as other killers Jerry Brudos and Dennis Rader – helped with future murder investigations.
Acknowledging that he wanted to kill everyone he came into contact with, Kemper devoted his attentions on his mother.
His next victims would be Rosalind Thorpe and Alice Liu whose mutilated bodies were found just outside of San Francisco.