I'd recommend seeing Let The Right One In, the Swedish movie made from the Swedish book this movie is based on. A very interesting little film. Yes, it'll have subtitles, and I highly suggest you look for the version with "cinematic" or "theatrical" subtitles. Let Me In has been simplified in its development for an American audience. Also it appears the small studio that was going to put it out has gone out of business, so as to when anyone might be able to see it is kinda up in the air right now.