David Berkowitz (aka the Son of Sam) was responsible for a crime spree from 1976-1977 that saw him take the lives of 6 people. After he was caught, Berkowitz claimed that his neighbor's dog told him to kill. He was later diagnosed with paranoid schizophrenia.
Ed Gein was the inspiration for some of the scariest fictional killers, including Norman Bates and Leatherface. After being charged with the murder and mutilation of multiple victims, he was deemed unfit for trial and diagnosed with schizophrenia. Ten years later, he faced trial and was found guilty, but spent the rest of his days in a mental hospital.
Richard Chase killed 6 people in Northern California and famously drank their blood, leading to his nickname, "The Vampire of Sacramento." Before his first murder, Chase was diagnosed with paranoid schizophrenia and was institutionalized for a year. Despite his condition, Chase was not able to use an insanity plea in his case. He killed himself in prison.
Before Aileen Wuornos inspired the 2003 film Monster, she fatally shot seven men along Florida's highways. After she confessed, Aileen was diagnosed with borderline personality disorder by the state’s expert psychologist, Dr. Bernard. Despite that, Wuornos was sentenced to death, and eventually volunteered to receive lethal injection even after her sentence had been put on hold.
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