A film of two halves
This movie was at it's best in the first half when there were only a couple of characters and the sense of claustrophobia and evil was most present. There are some stunning set pieces reminiscent of vintage Dario Argento, hallway, lift shaft, bathroom etc. Unfortunately, for me it gets bogged down and loses it's 'evilness' in the second half when more characters are introduced and it practically becomes just another routine and dull cop-like movie.
"Just because you're paranoid, it doesn't mean they're NOT out to get you"