Read the book. I don't watch movies almost at all. People really don't believe me, but I see maybe 5 movies a year. I have come to dread book-movie transitions.
Similarly, I read more manga than I watch anime, which usually comes in TV episode form. There are so many weird manga being turned into shows. Often, these are dumbed down quite a lot, too.
I strongly prefer the experience of a book. I can (maybe) make a tale closer to the author's vision. Or I at least prefer my own version. I can't stand move/TV conventions, distracting soundtracks, things taken out or injected for weird reasons, actors chosen for their fame or whatever.