The first 1h30m of this 1h50m movie is not horror, at all. It's a suspense drama. It's a good one, but nonetheless, it's one. What qualifies this as a horror movie is just the last 20 mins, and to be honest, it's not really that shocking. I generally am all in favor of waiting for the shit to hit the fan, so to speak, but I wouldn't mind if this actually had a bit more of that.
Though, honestly, my biggest problem with the movie is the weird dream-like sequences at the end, which can't really be dreams because that would give our character meta-knowledge of things he couldn't possibly know beforehand, but it also doesn't make ANY sense if it would have taken place in reality, which honestly just ruins the whole surrealist part.
So, this is a movie that starts as a pretty good drama, ends as a decent horror movie, and has a bad surrealist part to it. Overall, I enjoyed most of the movie, but I just can't classify it as the classic I was expecting it to be.

Still waiting for