Zygmunt Hübner as Siwy

Barbara Brylska as Ewa "The Princess" Salm

Ryszard Filipski as Robert Kwasowski

Piotr Pawłowski as Doctor Leśniakiewicz

Krzysztof Żurek as Lechosław Kerner

Tadeusz Bartosik as Actor

Arkadiusz Bazak as Maj. Szelągowski

Antoni Bohdziewicz as Stage Director

Elżbieta Burakowska as The Second Ewa

Helena Bystrzanowska as Maid Melania Roch

Zofia Czerwińska as Apolonia M.

Ryszarda Hanin as Ewa Salm's Mother

Witold Holtz as Journalist

Anna Jaraczówna as Ewa Salm's Neighbour

Alina Jurewicz as Doctor

Emil Karewicz as Colonel

Zbigniew Koczanowicz as Witness

Tadeusz Kondrat as Doctor treating Siwy

Krzysztof Kowalewski as Witness

Ewa Krasnodębska as Kerner's Mother

Juliusz Lubicz-Lisowski as Presiding Judge

Gustaw Lutkiewicz as Restaurant Manager

Katarzyna Łaniewska as Theatre Actress

Bernard Michalski as Doctor

Jacek Opolski as Intelligence Officer

Józef Pieracki as Kerner's lawyer

Ryszard Pietruski as Jerzy Pałka

Józef Rosinski as Jóźwiak

Teresa Szmigielówna as Prosecutor

Konstancja Tulewicz as Typewriter Clerk

Paweł Unrug as Ewa Salm's colleague

Maja Wodecka as Mariola Kerner

Janusz Zakrzeński as Maj. Durski

Tomasz Zaliwski as Capt. Studniarz

Jan Żardecki as MO Colonel

Jolanta Bohdal as (uncredited)

Jerzy Laskowski as MO Captain (uncredited)

Jerzy Nasierowski as Man at the Bristol Hotel (uncredited)

Sylwester Przedwojewski as Prison Warden (uncredited)

Jan Machulski as Prison Warden (voice) (uncredited)

Andrzej Zaorski as Journalist (voice) (uncredited)