* Jadwiga Smosarska as Krystyna
* Stefan Jaracz as Dr. Jan Wolski
* Mieczysław Cybulski as Count Stefan Jurkowski
* Kazimierz Junosza-Stępowski as Professor Stanisław Boroski
* Maria Bogda as Countess Krystyna Jurkowska
* Helena Grossówna as Zosia
* Józef Węgrzyn as Janek
* Jan Kurnakowicz as Antoni
* Helena Buczyńska as Mary
* Stanisława Wysocka as Jadwiga
* Wanda Jarschewska as Anna