I heard a lot of bad things about this movie. People don't really like PG-13 horror movies about the supernatural, so this one got a lot of flack, but I think it was mostly undeserved. There are some problems with this movie. There's one character who can't deliver believable lines to save his life, and we don't really get to know any of the characters before we're thrust into this story about a young girl who is being haunted by visions of something ghostly and isn't sure why. I think the
movie could have done a better job of introducing us to these characters before throwing all this supernatural crap at us, but it really didn't affect me in terms of making me like the movie any less. I liked Casey, the main character, and I thought she was believable enough as she tried to figure out what was going on and why her life was suddenly turning into a horror movie all around her. The subplot involving her mother's descent into madness and eventual suicide years ago was intriguing and it gave Casey a good reason to fear that the same thing was happening to her.
Much has been made about how this movie delves into spiritual terms and(as someone put it) "gobbledygook" about exorcisms and demons, but I didn't find that annoying at all. I love seeing movies about exorcisms (good ones,anyway, ones that are worthwhile, and in my opinion very few are) so I didn't mind the "mumbo-jumbo" spouted by the characters. The exorcism scene in this movie is one of the best I've ever seen (yes,I've seen many) and even though I figured out the twist ending early in the movie, I still think it was handled well. All in all I'm impressed with this movie and I don't think it got the recognition it deserved.