Lilly Rabe is the actress who plays Misty Day (and played the young nun in Asylum). CA is Curlyarca Dennis O'Hare was in 2 seasons, not 3. Sorry about that. He was in the first, and will be in Coven. He was the man on fire in season 1, if that makes sense (w/o spoiling for those who have not seen it).
I adore him. He is an incredible actor. They could not have found a better person to play Russell, the Vampire King of Mississippi on True Blood.
I really do appreciate the writers approach to topics. The show is supposed to be horrifying and they have covered several sensitive subjects in American History (and current events), in a unusual way.