A játszma (1976)

Olga is a simple librarian, loving mother and wife of 70s Cold War Hungary. One day the state police show up at her doorstep and take her for interrogation. She realizes only now that when she visited her elderly mother in Germany, she was secretly persuaded to spy to her former lover. The Hungarian counterintelligence forces her to only release information that they have reviewed beforehand. From one moment to the next, Olga finds herself in a dangerous espionage game.