I went to watch it expecting a helluva thriller. But the movie contains much more than that. The jugalbandi of Amitabh and Farhan is the best part of this movie. Do watch it if only to see the friendship they share. Just loved it. The mystery part is good, just not as good as it could have been, in my view. The songs, on the other hand, are a treat, specially the opening montage which reminded me of the animated movie UP.