Gli Indifferenti (1965)

Leo (Rod Steiger) is an aristocrat whose family fortunes have plummeted in this downbeat melodrama. He seeks to reverse his money problems by courting the wealthy Mariagrazia (Paulette Goddard), throwing over his former lover Lisa (Shelley Winters) in his quest to continue his posh lifestyle. Mariagrazia is too caught up in the attention of the charming, conniving Leo to notice that he also makes a play for her daughter Carla (Claudia Cardinale). Mariagarzia continues to want Leo even after he gains control of family fortune and property. Meanwhile, Carla's brother Michele (Tomas Milian) takes up with the jilted Lisa. Finally, in a most poignant scene, the ailing matron finally realizes she has been used by Leo. Excellent performances all around.
~ Dan Pavlides, All Movie Guide