dibakar then informs arjun that ratan has agreed to be state witness against him. arjun sends karna to finish ratan in the hospital. this is a trick played by dibakar to force arjun into committing something foolish. dibakar kills karna while arjun is on the phone with him. this act angers arjun, who swears to kill all of dibakar's nearest and dearest. he attempts to kill puja, but she escapes with a bullet-wound in her arm. dibakar then reveals that his boss, the dsp (biplab chatterjee), is arjun's mole in the police department. having been exposed, the dsp has no choice but to help dibakar in exposing arjun.