What a movie and WHAT a story.
It is one of the most ingenious stories that I have ever heard/seen. Whatever you do, DO NOT read up on this movie or listen to anybody who has seen this movie before you go see it, if you want the full effect. (They call them "spoilers"
for a reason.)
I will say nothing more here, other than that some may have been concerned that the movie deals with the supernatural/spiritism. I can assure you that it does NOT. That is all I will say.
I think there will may be some Oscar nominations for this movie, and that is something you don't normally hear about for summer movies.