Carlos Saura - Los Ojos Vendados AKA Blindfolded Eyes (1978)

Plot
While attending an international conference which seeks to reduce the incidence of the use of torture by nations around the globe, a movie director (Jose Luis Gomez) encounters a woman (Geraldine Chaplin) whom he decides to cast in a play about state torture. As events proceed, he and the woman, the wife of a dentist, become lovers. All along, however, right-wing types have been persecuting, and the whole endeavor goes sour.