Sangini(1974)

This story concerns an honest police officer Amit Sen and his wife Seema. Seema has to kill a smuggler, Changez in self-defence, but she cannot tell anything to Amit. Changez's boss Shamsher Singh harasses her for the diamonds that Changez has accidentally dropped in her house, but she has no clue about. In due course, Seema is arrested. Finally, Amit catches Shamsher Singh and proves Seema's innocence in court.