Saw it on Encore tonight (sorry if I misdirected you to Starz, earlier).
A completely serviceable occult movie, and teen flic, and even though rated PG-13, well worth renting, or catching again on cable. Genuine WTF moments, twists and turns, a very nice script, a nice soundtrack that was mostly metal and rock, and no Emo, some genuinely creepy moments, and a great line, something along the line of "Fuck you, Harry Potter!" Literally.
I really enjoyed this movie. A really good sit on the couch and munch popcorn flic, with enough real occult trappings to make me genuinely uncomfortable.
You must work hard, or clever, or both, to get me out of my comfort zone. This movie managed.