Powerful film. You'll want to watch it at least two times. I don't believe you can catch all of the nuances with one viewing. Possible spoiler alert: The scene when we see Casey become the ghost is powerful in that we wait, knowing something is going to happen but the director just keeps the camera on a sheeted corpse and demands us to wait what seems like a very long time in this age of "we don't want the viewer to get bored so there must always be action". This film will stay with you long after you've seen it.