Bogumił Kobiela

Jan Piszczyk

Barbara Lass

Jola

Barbara Połomska

Zosia Jelonka

Andrzej Krasicki

Witold Kropaczyński

Kazimierz Opaliński

Prison Warden

Adam Pawlikowski

Ens. Osewski

Wojciech Siemion

Józef Kacperski

Jakub Goldberg

Jewish Storeowner (uncredited)

Roman Kłosowski

Piszczyk's Client (uncredited)

Leonard Pietraszak

Conspirator (uncredited)

Roman Polanski

Tutor (uncredited)

Sylwester Przedwojewski

Police Doctor (uncredited)

Ryszard Ronczewski

Soldier transporting "Secret Weapons" (uncredited)

Ewa Wiśniewska

Student (uncredited)

Barbara Horawianka

Irena Kropaczyńska (voice) (uncredited)