Bogumił Kobiela

Jan Piszczyk

Barbara Lass

Jola

Krystyna Karkowska

Wrona-Wronska

Barbara Połomska

Zosia Jelonka

Edward Dziewoński

Jelonek

Tadeusz Janczar

Ens. Sawicki

Kazimierz Opaliński

Prison Warden

Roman Kłosowski

Piszczyk's Client (uncredited)

Krzysztof Komeda

Soldier (uncredited)

Leopold Rene Nowak

Franek the Rickshaw Driver (uncredited)

Wojciech Pokora

Cadet in a Camp (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)