Every day, 13-year-old Tabitha Tuders leaves her home in East Nashville, Tennessee, and walks a few blocks to catch the school bus. But the morning of April 29, 2003, is different. Somewhere between her home and the bus stop, Tabitha vanishes. Did she run away? Was she abducted by a stranger? Or kidnapped by someone she knew? And why, after 19 years, has no trace of the teen ever been found?