Khoon Bhari Maang (1988)

Aarti, a homely but wealthy widow, is the unwitting target of a scheme to divest her of her family, fortune and life. Her father is killed by one of his workers. The worker's nephew Sanjay woos her and weds her, then tosses her into a crocodile-filled lake with the goal of inheriting his dead wife's riches. Aarti lives, has plastic surgery that transforms her into a beauty and plots her revenge.