Truly an excellent movie after a long time!! A super suspense Thriller, which you will come to know at the very end. A little bit exposure about the suspense would kill the thrill out of the movie. The actors have acted very well specially Vidya Balan. She is just too good.
A Must watch movie. I will watch it again to understand all properly. :-) Not at all understandable for children. Even after quite some time after the release, still the theaters are going strong on this movie, simply based on mouth to word publicity, you cannot see marketing of this movie much. And, they have kept the budget to the optimum, and still have produced a superb movie.