Kollywood actor Karthi has great confidence in his to be released flick 'Siruthai'. Speaking to the media the actor said that he was thrilled to be a part of the movie. He said that it will be on the lines of Dhool and Ghilli.“For the first time, I am playing a dual role. One is Rocket Raja, a small time pickpocket, while the other is Rathnavel Pandian, an honest police officer. The film will come with some surprises,” , the actor was quoted as saying. The flick has ace kollywood comedian Santhaanam sharing the screen space with Karthi. The flick is directed by Siva and produced by Studio Green.