In a girls' school, Maria, a student, is accused of having an affair with the young professor Marini. The main accuser is her classmate Anna, played by Alida Valli.
| Actor | Role |
|---|---|
 Alida ValliAnna Campolmi | Anna Campolmi |
 Irasema DiliánMaria Rovani | Maria Rovani |
 Andrea ChecchiIl professor Marini | Il professor Marini |
 Carlo CampaniniCampanelli | Campanelli |
 Ada DondiniSignorina Mattei | Signorina Mattei |
 Giuditta RissoneLa direttrice | La direttrice |
 Sandro RuffiniCarlo Palmieri | Carlo Palmieri |