Desc: Les secrets de la princesse de Cadignan: Directed by Jacques Deray. With Claudine Auger, Marina Vlady, François Marthouret, Niels Arestrup. At 36, despite all the lovers she has had, amiable Diane de Maufrigneuse, Princess of Cadignan, has never found true love. She confides this to the Marquise d'Espard who offers to introduce her to a kind of man she does not suspect exists.