'Blackmail' is a story about a cop (Sunil Shetty) and a criminal (Ajay Devgan). The 'Blackmail' is a story about a cop (Sunil Shetty) and a criminal (Ajay Devgan). The criminal wants to get even with the cop for having put him behind bars and he does so by kidnapping the cop's kid when he gets out of the jail.详情