I went into the theater not knowing anything about this movie; I hadn't seen any previews on TV, no reviews on the Internet, nothing. A good buddy of mine wanted to go see it, so I thought "What the heck, it's Friday night and I don't have anything better to do", so we went. Boy, did I learn my lesson.
I can't believe I actually paid to see this movie. Do yourself a favor and just wait until this comes out on DVD. Actually, don't do that; this movie isn't even worth renting. This is one of the most boring and non-entertaining movies I have ever seen. Although this movie is labeled as "suspense" or "thriller", there is nothing even remotely suspenseful or scary about it. It uses all the scare tactics you're familiar with, and thus are not affected by anymore. For example, the bathroom mirror trick. Come on, how old is that trick?
As for the acting, I would say it is mediocre at best; no great performances from anybody that will save this movie. There were a couple of scenes in which I thought Haley Bennett (Molly Hartley) was going to be able to turn the movie around, but ultimately ending up crushing my hopes.
If you want to spare yourself two boring hours, don't go see this movie; it's just not worth the money. Also, remember to do your research. And don't trust your friends. (Just kidding)