 September 10th, 2001, one block from the World Trade Center. Security cameras capture the last known images of Dr. Sneha and Philip as she shops. The next day, chaos. Missing on 9-11 is the podcast that seeks to answer the question, what happened to Sneha? There is not a trace of her, nothing. Not a credit card transaction, no money taken out of her account, no emails, no phone calls, nothing. How does that happen?