...creates a dire portrait of a rapist, murderer, drug addict, corrupt cop and degenerate paranoid who's very apprehensive about iguanas. It places him in a devastated New Orleans not long after Hurricane Katrina. It makes no attempt to show that city of legends in a flattering light. And it gradually reveals itself as a sly comedy about a snaky but courageous man.
—Roger Ebert Chicago Sun-Times