Dr. Donald Ellis lost his family on 9/11.  But while others grieved, or plotted revenge, Dr. Ellis threw himself into a long-dormant research project. He traded his lab at the University of New York for an ugly riverfront warehouse in Brooklyn. What is he working on? And why does he spend every free moment at the warehouse staring across the river at Ground Zero? Because Dr. Ellis has a plan.  He’s going to make 9/11 “unhappen.”