I actually registered on this site to post this comment. I feel it is my duty to save you precious moments of life that are better spent elsewhere.
This film used the normal scare tactics, i.e. suspenseful building music, quick appearance on camera of people or things, reflections in mirrors, etc., but nothing new or original. The little whispers in the background try to make you nervous, but it leads to a dead end.
Speaking of endings, just when you think the movie has built to where it will explain exactly what is going on, it ends. One minute it seems all hell is about to break loose, and then there is a very weak resolution and the movie is over. The best way to describe it is to take a movie that is 2 hours long, and cut out the last half hour except for the final few minutes. I actually had to go home and verify that the theater didn't skip a reel or two. Unfortunately for us, they didn't.
Words can not express how terribly this movie ends. I am amazed that this ever made it into a theater. Don't waste your time and money on the theater, or even a rental. Hell, don't even waste your time watching it for free on TV. I've had bowel movements much more interesting and fulfilling than this movie. Maybe the director had a vision in his head, I just wish he would have let everyone else in on it.