该电影由拉法洛·马塔拉佐执导，伊冯娜·桑松、阿梅德奥·纳扎里、弗朗索瓦丝·罗赛等主演，于1952年上映。在97分钟的叙事中，《来历不明的孩子》（又名：内详）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 a baby boy. Giulio’s mother is against them: at first she takes her son abroad with an excuse and then has her grandson kidnapped making Luisa think the boy died in a fire.