Kemper on Kemper: Inside The Mind of a Serial Killer

Edmund Kemper III viciously and sadistically murdered 10 people, including his own grandparents and mother.

"I was getting less detectable," serial killer Ed Kemper said.

"I came from my mother, and in a rage, I went right back in," said Kemper.

Why do some killers like Ed Kemper go beyond murder and mutilate corpses? "The answer is, the killing alone is not psychosexually sufficient," said a forensic psychology professor.

 Dubbed “friendly” and “cooperative” by law enforcement, Kemper divulged every detail of his crimes to law enforcement.

But Harold Cartwright said he "never felt unsafe" in Kemper's presence.

"To understand the artist, you must look at the artwork," said FBI Special Agent John Douglas.

After enduring years of abuse from his mother, Ed Kemper started murdering co-eds to feel like "he had power."

Ed Kemper killed his mother and grandparents, but what happened to the rest of his family?

 “I wonder how her head would look on a stick?"