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Constance Dowling, the American actress who gained international celebrity through her appearance in the Italian film Bitter Rice, is the villainess in Duel Without Honor. The heroine is Annette Bach, who renounces convent life to move back in with her banker father (Massimo Girotti). Unfortunately papa has a mistress (Dowling), who takes an immediate dislike to Bach. After being caught with another man, the mistress is hounded out of the house, later to die alone. Thus only Ms. Bach and Mr. Girotti survive long enough for the (presumably) happy ending.