Imagine your entire town just washing away.

That happened in 2005 to Waveland, Mississippi, during Hurricane Katrina. CNN returns to Waveland and talks to the hard working people who rebuilt the town.  Libraries, roads, school and parks have reopened and 60 percent of the businesses are back. And CNN's iReport pulls together a haunting photography project of areas ravaged by the storm - what they looked like then, and what they look like today.

Also, CNN's Drew Griffin examines the mysterious deaths of nine patients found dead during Hurricane Katrina in a New Orleans hospital. Officials determined that the patients were sedated to death.