Danuta Starczewska
— Zosia
Stanisław Mikulski
— Janek
Teresa Szmigielówna
— Dr. Skalska
Stefan Bartik
— Kulawik
Leon Niemczyk
— Robbery organiser
Michał Szewczyk
— Felek
Tadeusz Białoszczyński
— Professor Biernacki
Halina Buyno-Łoza
— Woman in a beer booth
Adolf Chronicki
— Security guard
Jadwiga Hanska
— Medicine donor
Kalina Jędrusik
— Janek and Zosia's neighbor
Stanisław Jaworski
— Medicine donor
Wacław Kowalski
— Taxi driver
Stanisław Milski
— Owner of the broken car
Irena Netto
— Janek and Zosia's neighbor
Hanna Runowiecka
Tadeusz Skorulski
Władysław Dewoyno
— Security officer (uncredited)
Michał Gazda
— Dr. Szewczyk (uncredited)
Juliusz Grabowski
— Fake medicine salesman (uncredited)
Wiktor Grotowicz
— City chief (uncredited)
Stanisław Igar
— English sailor (uncredited)
Jan Łopuszniak
— Medical dispatcher (uncredited)
Józef Pieracki
— Medicine salesman (uncredited)
Henryk Teichert
— Janek's friend (uncredited)