No offense, but I hate you for recommending this movie.
Honestly, I've rarely been angered by a horror film, but this thing goes nowhere fast. It telegraphs where it's going early on, and then you just sit and watch it go there by the most roundabout route possible, all while it congratulates itself on how well it's hiding its destination. And don't get me started on how the brother could possibly have put together his facts about what's going on. He pulls this stuff right out of his ass, and just happens to be correct.
I really did not like this film. At least High Tension waited until the end to betray itself.
Okay, I don't really hate you. It was hardly a ringing endorsement. I suppose I would only have been satisfied with "Stay Away" in large block lettering.