Dr. Sneha Anne Philip lived in the shadow of the Twin Towers but did not work there and was not supposed to be there on Sept. 11, 2001. She was last seen shopping across the street from the World Trade Center the night before 9/11 and was never heard from again. Investigative reporter Kristin Thorne takes a deeper look at Sneha's life and whether it's possible that she did not die in the 9/11 attacks. Did something happen to the 31-year-old doctor the night before the event that changed the course of history? Is it possible that Sneha is still alive?