A gambler works for a villain not knowing that he's being used to entrap a patriot and gain military secrets. The cops assign a lookalike to nab him, but not having gambling skills could give him away.
The Great Gambler is a 1979 Indian Hindi-language crime action film co-written, directed and produced by Shakti Samanta, under his banner of Shakti Films. Based on Vikramaditya's Bengali novel Great Gambler, the film stars Amitabh Bachchan in dual roles, alongside Zeenat Aman, Neetu Singh, Prem Chopra, Utpal Dutt and Madan Puri in pivotal roles. Its story follows international gangsters, spies, and secret agents of different countries' intelligence agencies and their undercover operations.