Aditya Roy Kapur, who is gearing up for the April 7 release of his upcoming thriller film `Gumraah`, shared his trick behind playing dual roles in the film. The film tells the story of an assassin on the loose.

Explaining how he compartmentalised the two characters, the actor said: "I believe that the costume and body language are important, the way each character speaks has to be very different from one another. It has to feel like two different people with different wants and needs, and that was one of the challenges."