Inhibitions (1976)

After years of sexual humiliation at the hands of her sadistic husband and his friends, a wealthy heiress struggles to regain her sense of identity. To that end, not only does she become ruthless in business, but also delights in sexually dominating her young secretary, Anna. When she attempts to exert her sexual power over a blythe traveler, Peter Smart, he turns the tables on her, and she finds herself at the mercy of an unfamiliar emotion: Love.