La Casta Susana (Chaste Susan) is based on a popular and once-notorious Argentine stage operetta by Jean Gilbert and Juan Carlos Muello. Mirtha Legrand stars as Susan, who is presented with a "chastity award" by a pompous civic organization. The thing of it is, if there was anyone in the world who didn't deserve this honor, it would be Susan. Curiously, actress Legrand seems to neither understand the risque nature of her dialogue nor the implications of the storyline -- which in a perverse way adds to the film's enjoyment. Far more worldly-wise is Legrand's co-star Juan Carlos Thorry, who breezes through his role with a rakish aplomb worthy of a Maurice Chevalier. ~ Hal Erickson, Rovi