Khoon Ki Pukaar (1978)

After the murder of his wife, and his son's kidnapping, Dr. Vidya Bhushan decides to devote the rest of his life as a Poojary, living on the premises of a princely-donated temple, hoping and praying that one day he will be reunited with his estranged son. One day a wounded bandit named Sher Singh comes to him for protection, and he not only shields the man from the police, but also tends to his wounds, and lies to the townspeople that the man's name is Amrit, When Amrit recovers, he is grateful to Vidya for looking after him, and he falls in love with a town belle by the name of Shalu. What Vidya does not know that is that Amrit is really interested in the gold and jewelery hidden in a secret underground chamber below the temple; and what Amrit does not know is Shalu is seeking vengeance against Sher Singh for killing her father.