What message/conclusion does the movie SHAITAAN (starred-Kalki Koechin) convey?

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There was a movie named Shaitaan released few months back(September or November perhaps) It had kalki koechin and a number of new comers in its star cast. I saw the movie few days back but when the movie ended i felt clueless that what exactly the movie concludes or what message was it supposed to convey. What do you think it was supposed to convey to the audience? I am attaching a poster of it so that you can recognize it well.:)