I know everyone is talking about the acting but the point of this is to bring an enjoyable horror movie with a twist. They're not trying to be 'The Grudge' but it's still enjoyable with those similar elements but a very different story and a good end twist. I think it's worth a watch if that's the kind of movie you enjoy. It's all sub-titled, though, so I'll agree that you need to be sitting down and paying attention throughout.