Chaalbaaz (1989)

Anju and Manju, identical twins separated at birth. Born to a rich father who is paralyzed, they are brought up in totally contrasting environments. Anju is brought up in her father's house, bullied by her stepmother and her brother. She is constantly terrorized by them and often ends up in tears. Manju is a street smart girl, dancing in a hotel and ready to take on the world. They accidentally exchange places; Anju lands up in Manju's house and Manju in her father's palatial house. She takes up cudgels on behalf of the down trodden and soon discovers that she has a twin. She soon turns tables on Hattangadi and Kher.