Who is Gary Ridgeway?

Gary Ridgeway is well known as "The Green River Killer".  He is the most know serial killer.  He killed for over 20 years.  He killed women of all ages.  Some as young as 15.  He killed mainly prostitutes as he thought they were a disease.  He thought they were dirty and he didn't want them to spread their "Disease". He pleaded guilty in 2004, but his first killing was in 1981.  There was many times where he was questioned, but was never a suspect.  One of the victims boyfriend seen her get picked up by Gary and reported it, but the police never followed thorough.  If the police followed through, He may have been stoped before he could kill anymore.