Elfy, Countess of Saint-Hélié's daughter, was brought up with her foster sister Anne, in an old dilapidated castle whose landlord, Baron Julius Carol, disappeared mysteriously some day. The two girls had a playmate, Hervé, the son of the gamekeeper. Now that they are adult, Anne is in love with Hervé while Elfy thinks she loves the young man. One day, the baron's mummified body is found in an oubliette and the secret of the estate is revealed...
as Eustache Dauphin dit Monseigneur, le faux Louis XVII
as Elfy
as Anne
as Hervé
as Le baron Julius Carol - le baron fantôme
as La comtesse de Saint-Helie
as Le colonel
as L'évêque
as Fébronie Dauphin
as Albéric de Marignac
as Toussaint - le domestique
as Une vieille dame
as Léopold - le frère de Fébronie
as Joseph - le cocher
as Hervé enfant
as Elfy de Saint-Hélié enfant
as Anne enfant
