Direction, acting and background sounds are the strong points of the movie, you don't get bored at any point. Story is quite engaging. I thought problem with the movie is, we expect some big twist will come in the end and just blow our mind but nothing happens like it in the end. But obviously the story is succeeded to thrill us at many points and we get involved in story and stick with story to the end. It's a great thriller movie in Indian cinemas no doubt but it becomes predictable at the end. That's why I thought it is a overrated movie.