Marian Opania

Tadeusz Kasprzak

Aleksander Benczak

Bolesław Kasprzak

Henryk Hunko

Potter

Celina Klimczak

Tadeusz's Mother

Wiesława Kosmalska

Zygmunt Malawski

Director

Jerzy Przybylski

Actor

Edward Rączkowski

Philosopher

Magda Teresa Wójcik

Choir Director

Janusz Zaorski

Alfred Cyganiewicz

Jerzy Block

Patient

Irena Burawska

Patient

Maciej Grzybowski

Patient

Marian Harasimowicz

Jerzy Januszewicz

Patient

Stanisław Marian Kamiński

Guard

Ludwik Kasendra

Exam Board Member

Bożena Miefiodow

Patient

Bohdana Majda

Actress

Ewa Milde

Actress

Jerzy Moes

Actor

Wiesław Mirewicz

Włodzimierz Saar

Stanisław Sparażyński

Exam Board Member

Lena Wilczyńska

Patient

Tadeusz Schmidt

(uncredited)

Romuald Drobaczyński

Patient (uncredited)

Jerzy Jogałła

Assistant (uncredited)

Leszek Kowalewski

Patient (uncredited)

Antoni Krauze

Art Instructor (uncredited)

Michał Szewczyk

Actor (uncredited)

Tadeusz Teodorczyk

Bolesław Kasprzak (voice) (uncredited)