Murder victim. Born in Seattle, Washington to Herbert L. Avent and Velma Harris. Pammy was last seen on October 26, 1983 in Seattle. Pammy’s remains were identified 20 years later through dental records. Her family conducted a memorial service for their daughter on November 8, 2003. Pammy was a victim of Gary Leon Ridgway, known as “The Green River Killer” who was responsible for the murders of 49 women in Seattle, Washington, between 1982 and 1984. (bio by: Shock)