Featuring eyewitness testimony, Nova takes an in-depth look at what made Hurricane Katrina so deadly and analyzes how, despite technically sophisticated flood and storm defenses, this event has resulted in unprecedented destruction for the Gulf Coast. In less than 12 hours on August 29, 2005, Hurricane Katrina devastated the Louisiana coast, leading to more than a thousand deaths and transforming a city of over one million into an uninhabitable swamp. "Storm That Drowned a City" is NOVA's definitive investigation into the science of Hurricane Katrina, combining a penetrating analysis of what went wrong with a dramatic, minute-by-minute unfolding of events told through eyewitness testimony. What made this storm so deadly? Will powerful hurricanes like Katrina strike more often? How accurately did scientists predict its impact, and why did the levees protecting New Orleans fail?