Missing or Murdered: Where is 15-Year-Old Erica? Part 2: The Polygraph - S11.E8

In Part 2 of this Dr. Phil exclusive, Casey and Sandy — the adoptive parents of missing 15-year-old Erica Parsons — continue to explain their side of their daughter’s disappearance. What happened to the teen? And, why wasn’t she reported missing until nearly two years after she was last seen? Police say the couple has not been cooperating with the investigation — but they maintain their innocence. Dr. Phil enlists the help of polygraph expert Jack Trimarco.