Benaam (1974)

Amit Shrivastav works for Glaxo company in Bombay and lives a happy life with wife Sheela and son Bunty he frequently attends office parties as his job permits him to do but Sheela is bored of attending such parties.Once on his way to party he sees a man getting stabbed in mid of the road and killer escapes, as no one is willing to come forward for help Amit admits the victim to hospital and moves towards the party venue.But next day on wards Amit starts getting mysterious calls from the killer at his office and home asking him for a piece of paper recovered from the stabbed victim.The stabbed victim is identified as a journalist and Inspector Jadhav finds that he was about to expose a known personality in few days.The killers tries to enter Amit's house in order to recover the piece of paper and kills his Dog Johnny,Amit who was not cooperating with cops till then fearing his family might be harmed decides to corporate with the cops.But the killer is is watching his every move and plans to kidnap Bunty so and asks him to kill the journalist .