The Great Gambler
This movie is "The Great Gambler" and story line : 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.
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The Great Gambler
Amitabh Bachchan
Zeenat Aman
Neetu Singh
Prem Chopra
Utpal Dutt
Madan Puri
Om Shivpuri
Helen
Roopesh Kumar
Sujit Kumar