Farhan akhtar and bachchan sir acting is superb.a predictable mystery.there are some twist. Which is worth to watch. But I am totally disappointment with songs.i dont like any songs from this movie.movie script is toughly writed.this is quite comfortably a good emotional thriller from bolllywood.movie has only 1 hour 40 min run time.bachchan sir grieving character humours himself to stay alive.some dialogue of this movie r very good.overall a quite entertaining.