Adhikar - Bengali, 1938
Director: P.C. Barua
Music Director: Timir Baran
Lyrics:  Ajoy Bhattacharya, Munshi Arzoo, Rashid, Rabindranath Tagore
Playback: Pankaj Mullick, Pahadi Sanyal  
Cast: P.C. Barua, Jamuna, Menaka Devi, Pahadi Sanyal, Pankaj Mullick, Rajlakshmi Devi, Molina Devi

An English translation (a very good one) is provided.

"Adhikaar followed Mukti and went to bag the Best Film of the Year Award from the Bengal Film Journalists’ Association, the oldest film award instituted in the country. Through this film, Pramathesh tried to dispel the myth that the rich alone are exploiters and the poor are the exploited. It is the story of a girl from an urban slum who learns that she is the illegitimate child of a rich man who has bequeathed all his wealth to his legitimate daughter. Intent on revenge, she sets about stripping her half sister not only of her wealth, but also of her lover. She succeeds in her revenge but finds herself lonely, social outcast at the end of the road. Pramathesh refuses to close the film and leaves it open ended, inviting the audience to draw its own conclusion. He does not stand on moral judgment either on the slum girl, or on the victim, and yet, the film turned out to be a thundering success, both in critical and in commercial terms. It was released by Chitra Talkies on 26th January”

From Shoma A. Chattereji's book, "Pramathesh Chandra Barua: The Crownless Prince, the Eternal Devdas"