Never Seen Again season 2 episode 9
Episode title: Oakley Carlson
After three happy years in foster care, Oakley Carlson must be returned to her biological parents. Her broken-hearted foster family accepts the decision until the mom receives a call on Oakley's 5th birthday asking if she can take the girl "once she's found." Oakley's birth parents claim they haven't seen her in a week, but the last verified sighting was 10 months earlier.
