Don York claimed to have no memory of shooting his wife Pat or her new love interest, but under hypnosis, York revealed some startling claims about the night of the shootings.
"Danny" was trained to kill as a marine in the Vietnam war, but as the veteran would tell psychologist Al Carlisle, that killing instinct never left him.
While prosecutors painted Lyle and Erik Menendez as spoiled, self-serving liars who killed their own parents to inherit their millions, the defense argued they were traumatized victims of sexual abuse who feared for their lives.
Ted Bundy performed well on standard psychological tests during a 1976 evaluation, but one clever psychologist decided to dig deeper into Bundy's past to uncover the truth.
“I think in my own mind, it’s killed once. Can you go to hell anymore for killing twice?” serial killer Arthur Gary Bishop explained of how easy it was to take the lives of five young boys.
“I guess I must have gotten into a frenzy or something,” Dale Pierre Selby said of his reason torturing and killing his victims during a robbery. “At times I can get so that I have a rage.”
Ted Bundy's first-known murder victim was killed in 1974 — but some believe the notorious serial killer's killing spree may have begun during a trip to the New Jersey shore.
Pamela Smart was convicted in 1991 for convincing her teenage lover and his friends to kill her husband, Gregg Smart, in a case that inspired the movie "To Die For."