Barsaat Ki Ek Raat

Anusandhan or Barsaat Ki Ek Raat is a 1981 Indian bilingual action thriller film made in both Bengali and Hindi languages, produced and directed by Shakti Samanta under his banner of Shakti Films. Based on a novel of the same name by Shaktipada Rajguru, it stars Amitabh Bachchan in his debut in Bengali cinema, alongside Rakhee Gulzar, Amjad Khan, Utpal Dutt and Abhi Bhattacharya in lead roles. The film follows Inspector Abhijeet Rai in search of Kaliram, a criminal whom he arrested five years ago, after his pregnant wife gets injured by the latter.