S1/EP1: Experts explain the twisted motivations behind "Co-Ed Killer" Ed Kemper's gruesome murders.

S1/EP1: Harold Cartwright recounts defending serial killer Ed Kemper.

S1/EP1: Listen to serial killer Ed Kemper explain why he murdered his own mother and "humiliated" her corpse.

Profilers realized they could use their strategies from interviewing Kemper to figure out how other serial killers tick.

Two roommates were Ed Kemper's first victims.

Kemper explains when he decided to kill his mother.

Ed Kemper, also known as the Co-Ed Killer, murdered and dismembered 10 people, including his own mother. Former FBI agent John Douglas takes us through his extensive interviews with Kemper, which became the backbone of modern criminal psychology.

FBI Special Agent John Douglas and FBI consultant Ann Burgess from the FBI Behavioral Science Unit discuss how interviewing Ed Kemper in prison helped the team innovate ways to investigate serial killers.

Serial killer Ed Kemper socialized with police officers at local bars while he was also killing. FBI Special Agent John Douglas and others discuss Kemper’s fascination with law enforcement and how he sought power over others.

At an early age, serial killer Ed Kemper displayed disturbing behavior. Experts discuss Kemper’s obsession with death and the morbid role-play games he played with his sisters.

Serial killer Ed Kemper claimed that his mother was an abusive parent. Special Agent John Douglas and Anne Burgess, formerly of the FBI, and Louis Schlesinger, PhD. discuss Kempers love-hate relationship with his mother.