So when I was beating the guy, I started thinking, 'What if I was Hannah Montana?' . . . And little do they know that that's why I look so insane . . . I'm torturing myself with thoughts of, 'How could I actually pull off being a high school student and a pop star at night?'

I felt people responded to two things. One, obviously, is the gore and the scenes like the eye gauging.

I've always been a fan of 3D, going back to movies in the '50s. I was part of the early '80s 3D craze, which was coming at you in Jaws 3D, so I've always wanted to make a 3D film.

I've always wanted to be involved in an exorcism movie. But I thought, "How do you make something scarier than The Exorcist?" The answer is you don't. But that doesn't mean you can't make something that is original and interesting.

You have to write scenes and design scenes that are scary and horrific, but that are also watchable. I didn't want people to just feel like they got punched in the stomach.

It's the difference between hunting a lion and hunting a deer. If someone hunts a lion, it's like: "Wow, they're brave!" But if they're hunting a deer it's like: "That poor deer!" I know that. I know that guys getting killed is horrible but people have seen it before. You've seen The Evil Dead. With girls, it's like: "I don't want to see that happening..." I know that.

There's something very scary about exposing yourself on camera, knowing that you're going to be put on thousands of screens around the world for everyone to judge, but there's also something very thrilling and exciting about it.