Ariel Dorfman, 1991 (drama, but novelistic). Post-dictatorship Chile and the woman who recognises her former torturer.
From Wikipedia
Death and the Maiden is a 1994 mystery drama film directed by Roman Polanski and starring Sigourney Weaver, Ben Kingsley and Stuart Wilson. It was based on the 1990 play of the same name by Ariel Dorfman, who also co-wrote the screenplay with Rafael Yglesias.