It's really rare for an American film to open in Japan before America, so I rushed to see it. Well, I might not have rushed had it not been for Juliana Moore who does deliver despite huge gaping plot holes littered throughout the film.
I won't give anything away about the story. There is a lot of development in the first half of the movie which might make the film seem s l o w for some viewers. When the mystery is revealed it is surprising but even given the careful buildup you might still have to make an effort to suspend your disbelief if only because of the plot holes (which I can not mention with out enumerating spoilers).
There are quite a few logical disconnects, too. In a age of cell phones when you're a busy psychiatrist why would you drive across town to do something which would take ten seconds by phone? Because it's a plot device.
Still, I enjoyed the film. I can not recommend it to my Japanese friends as there is a lot of talk about God and Faith which is lost on a truly secular country; but I can recommend it to people who like films like The Ring or The Exorcist. There are some interesting characters and a lot of good acting especially by the male lead who, well, you'll see.