Kangana Ranaut is set to play a spy in the upcoming heroine-centric action thriller, Dhaakad."Dhaakad is an action film and it is (a) big film. For us, it's like venturing into a genre that is absolutely missing in Hindi films. It is something of a thriller -- intriguing and more of like a spy thriller. In the film, my name is Agni. I play a spy," Kangana told IANS.