SEATTLE -- Four years ago this week, 10-year-old Lindsey Baum disappeared after leaving a friend's house in McCleary, Wash.
Despite a $35,000 reward offered in the case, hundreds of leads, and the identification of a local jewelry store owner as a person of interest, no arrests have been made and Lindsey has not been heard from since.
But, Lindsey isn't alone.
According to the National Center for Missing and Exploited Children, 84 other children who went missing in Washington still have not been found.
See the photo gallery at left to get their stories.
And for more about Lindsey Baum, here are earlier KOMO News stories about key developments in her case: