I think everything about the movie is perfect except for the beginning. I would recommend editing the first few minutes of the film and watching it from the time Varun makes his presentation. The reason why i think that would make a better film is because it allows us to go into the mind of the protagonist and view the world from his point of view.

He has lost his wife, he is desperate to know who the killer is and doubts arise in his mind when Nawaz keeps denying his role and the police cannot find out the second person in the car. This is the perfect setting for the second half, it also justifies his actions and makes a great climax when Nawaz finally confesses.