Interesting idea. Very poor execution for half of the movie. Also, 90% of the other actors are not on the same level as Sandra, it's like they spent the majority of their talent budget to hire her and had to resort to C list actors for the rest of the cast. For a similar plot but done way better, I would recommend the 80s horror movie "The Prince of Darkness" by John Carpenter. I commend Sandra Bullock on her performance, but she deserved a lot better material than this movie which feels more like a made-for-TV movie. I am puzzled why she accepted to do this - is she tired of doing great films with the likes of George Clooney, Tom Thanks, etc? lol She needed a break from working with A-list actors? Who knows. The movie is entertaining, but not really that good.