Nirnayam (1991)

A sincere cop named Vamsi Krishna (Nagarjuna) is sent undercover along with two other cops. Shivram (Subhalekha Sudhakar) is one of those cops and is a close friend and associate to Vamsi. The cops are sent by the Police Commissioner (Giri Babu) to track down a vicious and dangerous criminal named Raghuram (Murali Mohan). Vamsi performs surveillance on Raghuram's daughter Geetha (Amala) by getting into her opposite building's flat in a residential complex to gather details and whereabouts of her criminal father. Geeta lives with her aunt Jolly (Sukumari). When Vamsi, in the guise of a telephone department inspector, pursues Geetha and falls in love with her, she reciprocates his love interest initially but refuses after she gets to know the truth that he is a cop and is about to drag her father to prison. Vamsi gets hold of Raghuram through Geetha and finds out that he is actually an innocent victim. The real criminal, Prahlad (Sharat Saxena), deceives Raghuram and plans a crime operation. The misunderstanding between Geetha and Vamsi gets cleared up, and Vamsi banishes Prahlad.