The tragic love story between Guido, the owner of a marble quarry and Luisa, the humble daughter of one of his employees, ends up in her giving birth to their baby boy. Giulio's mother is against them: first she sends her son abroad and then has the baby kidnapped, making Luisa think the boy died in a fire.
- Genre: Drama, Romance
- Studio: Labor Film, Titanus
- Keyword: based on novel or book, love, mother superior, presumed dead, nunhood, catholic priest, quarry, social differences, based on opera, rich man poor woman
- Cast: Yvonne Sanson, Amedeo Nazzari, Françoise Rosay, Folco Lulli, Enrica Dyrell, Teresa Franchini