It's an HBO series that just wrapped up on Sunday. It's the classic good vs. evil set in the thirties. Here's a cut and paste job from the official web site.
CARNIVALE follows a traveling carnival as it wends its way across the Dust Bowl, focusing on Ben Hawkins, a mysterious 18-year-old fugitive with hidden talents who is taken in by the carnival, and Brother Justin, the charismatic, shadowy evangelist who will ultimately cross his path. The series takes place at a time of worldwide unrest, with evil on the rise around the globe and the Great Depression wreaking economic and social havoc here at home.
Ben is a healer who finds using his power comes with a great cost. Brother Justin is a bad mofo. Plus the return of circus freaks! It's a quality show that makes you want to watch each episode twice.