Gary Ridgway (1949-) was convicted of 48 murders in the Green River Killer case that lasted more than 20 years. After his arrest, he confessed to more murders than any other American serial killer: 71. Many of the victims were prostitutes. He strangled the women and dumped their bodies in wooded areas in Washington state’s King County. He entered a plea bargain and agreed to show authorities where missing victims were in exchange for not facing the death penalty.