The director has successfully prevented the audience, till the climax, from finding out the villain. However, I feel this is the only good thing on this movie.
Throughout the movie, the police does the investigation not by searching for the clues but by slapping the crap out of the suspect and making him reveal what the person knows about the crime. If the suspect is adamant and doesn't reveal the truth, the investigators simply eavesdrop the suspect's phone call and proceed the investigation and this happened twice.
There was no single scene in the movie where the police finds a clue which was left at the crime scene and proceed with the clue (Spoiler: This happened only once in the typewriter part but never happened again). Only the clues can create interest and thrill to the audience when watching these kind of movies. This movie would've seemed better if the investigation part was more interesting. But overall this movie is watchable as the identity of the villain can not be found till the very end.
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