Gary Leon Ridgway (born February 18, 1949), known as the Green River Killer, is one of the most prolific serial killers in American history. On November 30, 2001, as he was leaving a Renton, Washington factory where he worked, he was arrested for the murders of seven women whose deaths were attributed to the "Green River Killer". Four murders were linked to him through DNA and three through paint he used at his job. Two years later he pleaded guilty to 48 counts of aggravated murder, although the estimates run much higher. Ridgway has been married three times and has one son. He carried his son's photo in his wallet to lure most of his victims into his pickup truck.