Gary Leon Ridgway - American serial killer known as the Green River Killer, convicted of 48 separate murders and confessed to nearly double that number. He murdered numerous women and girls, most of whom were also alleged prostitutes, in Washington during the 1980s and 1990s.
Edmund Emil "Big Ed" Kemper III (born December 18, 1948), also known as "The Co-ed Killer", is an American serial killer, necrophile, and cannibal who was active in California in the early 1970s. He started his criminal life by shooting both his grandparents when he was 15 years old. Kemper later killed and dismembered six female hitchhikers in the Santa Cruz area. He then murdered his mother and one of her friends before turning himself in