Out of curiousity, I decided to check out the original Shutter on netflix, and I was not disappointed. Unlike the american version, I was genuinely creeped out by the korean version. It had good atmosphere, ambience and much more creative scares than its counterpart. The storyline was a little deeper than the american and seem to bring out more emotion when telling it. My suggestion would be to check it out, at least for some comparision or see its roots.