He was initially convicted of 48 separate murders committed between the early s and late s. As part of his plea bargain , another conviction was added, bringing the total number of convictions to 49, making him the second-most prolific serial killer in United States history according to confirmed murders.
Most of Ridgway's victims were alleged to be sex workers and other women in vulnerable circumstances, including underage runaways. Before his identity was known, the media gave him his nickname after the first five victims were found in the Green River.
After strangling them, he would dump their bodies in forested and overgrown areas in King County , often returning to the bodies to engage in acts of necrophilia. Ridgway had been a suspect in the murders since ; however, investigators were unable to link him to the murders at that time. Later advances in DNA profiling allowed investigators to definitively link Ridgway to the murders, and he was arrested on November 30, , as he was leaving the Kenworth truck factory where he worked in Renton, Washington.
His home life was somewhat troubled; relatives have described his mother as domineering and have said that, while young, he witnessed more than one violent argument between his parents.
His father was a bus driver who would often complain about the presence of sex workers. Ridgway and his brothers would face corporal punishment from his mother with belts or sticks for minor offenses.
