Ken Hixon talks about the cast in this recent interview,
"They're very different people. They have their own unique approaches," he said, "and it's really extraordinary, whether you're watching them doing a scene with just one of them, two of them or get all three of them together. Kristen Stewart is astonishing. She is like lightning in a bottle -- actually, with the cork off the bottle. ...
"You know, that's part of the writer's reward. I've had very good luck with casting. It's wonderful, and it never gets old. ... I'm in hog heaven."