Unfortunatly I was very disappointed with the movie. I had read the book and I guess I expected it to keep to the book. Oh you get the same plot, theme, and so forth but there are no details. You don't see all that Sam did to survive. The movie barely touches that aspect. It also changes elements of the movie. It has an entirely different ending. I guess if you haven't read the book it would be a great movie for you but not not for me.