South movies are always best when it comes to thrillers, Especially Tamil films.Ratsasan is a perfect example.The Psycho thriller was perfect when comes to bother story and execution.But some scenes are not convincing a bit.So that's why I gave 9.But Tamil industry proves once again that it is master of thrillers.The killer's character was designed in such a way that he's physically strong,mentally psychic...Worth watching