Udaan (1997)

Mr. Sahay is a wealthy industrialist, with heart problems, and has three other business associates namely, Mr. Sood, Mr. Rana, and Mr. Sethi. The three bring up a proposal to maximize profits by inducing drugs in a tonic meant for children, thus making them addicts from a very young age. Sahay is appalled at this proposal, and will have nothing to do with it. That night Sahay goes missing, and a few days his body is found, and the post-mortem verdict shows that he died of heart failure. His daughter, Varsha, takes over from her dad, and finds out that the three business associates have been involved in criminal activities, including embezzlement of funds. She confronts them, and asks them to clarify their position within two days. Before that deadline, Varsha is deemed medically insane and hospitalized, leaving the three business associates to carry on without any hindrance whatsoever.