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.
Yvonne Sanson
as Luisa Fanti / Sister Addolorata
Amedeo Nazzari
as Guido Canali
Françoise Rosay
as La contessa Canali
Folco Lulli
as Anselmo Vannini
Enrica Dyrell
as Elena
Teresa Franchini
as Marta
Gualtiero Tumiati
as Don Demetrio
Alberto Farnese
as Poldo
Aristide Baghetti
as Il padre di Luisa
Enrico Glori
as Rinaldi
Olga Solbelli
as La madre superiora
Nino Marchesini
as Il medico
