Baby Shannon: FBI's Desperate Search For Missing Mother and Child

Teenaged mother Rachel Timmerman takes her 1-year-old on a date with a mystery man, and sends a letter to her family the next day saying she's run off to marry him. Her body is discovered weeks later in a muddy lake... wrapped with chains and cinder blocks. The FBI goes on a desperate search to figure out who murdered this young woman, and whether her baby, Shannon, is possibly still alive.