Kahaani 2 is what they call a spiritual sequel. Here too we have a leading lady named Vidya and that's probably where the connection between the first and the second film rests. But the film is really enjoyable - a tense thriller and even more tense psychological drama, the story of which unfolds in pieces with nice twists and turns and great suspense. Now, right, the entire child abuse track is not given enough depth and is even quite simplistically handled, but then the film makes up for it with great suspense. Sujoy Ghosh shows to have quite a knack for this kind of cinema and his skill shows at all levels even if the film could have been better.
As expected, Vidya Balan is brilliant playing a woman who finds purpose in life and turns her biggest weakness into her prime strength. She is consistently in sync with her character and her involvement is very convincing. She is totally matched by Arjun Rampal, who is more of a supporting actor on paper but in actual fact he is as much a hero in this film as his female counterpart. The film ends on a nice note and it reveals the film's smart writing leading to a very good film. The film might not enjoy the aesthetic and cinematographic brilliance of its prequel but it's enjoyable from start to end and is altogether a good watch.