Stanisław Mikulski

Hans Kloss / Stanisław Kolicki

Seweryn Butrym

General Wierlinger ("I Know Who You Are")

Mieczysław Stoor

Sturmfuhrer Hans Stedtke ("I Know Who You Are")

Krzysztof Chamiec

Sturmbannfuhrer Lothar ("I Know Who You Are")

Janina Borońska

Irena ("I Know Who You Are")

Alicja Zommer

Doctor Marta Becher ("I Know Who You Are")

Wiktor Nanowski

Officer Interrogating Kloss ("I Know Who You Are")

Andrzej May

Jacek ("I Know Who You Are")

Wanda Koczeska

Basia Reczko ("Top Secret")

Igor Śmiałowski

Erwin Reil ("Top Secret")

Leon Niemczyk

Rioletto ("Top Secret")

Emil Karewicz

Hermann Brunner ("Top Secret")

Lech Ordon

Puschke ("Top Secret")

Marian Opania

Kazik Truchanowicz ("Top Secret")

Jerzy Walczak

Edward ("Top Secret")

Tadeusz Kalinowski

Kreisleiter ("Top Secret")

Mieczysław Waśkowski

Scharfuhrer Glaubel ("Top Secret")

Szczepan Baczyński

Old Man ("I Know Who You Are") (uncredited)

Marek Dąbrowski

Fritz ("I Know Who You Are") (uncredited)

Henryk Dudziński

Soviet Lieutenant ("I Know Who You Are") (uncredited)