Very good....spoilers.
I not agree with the comment that says that the ending was predictable.....after watch the movie we can not be 100% secure about the true identity of the killer.....the girl was insane?? (looks like the most coherent fact) or she was the only one that could watch the ghost....the part of the tickets with blood was never explained..and the crimes in other places.....so this one is one of my favorites.
8/10