 Serge MerlinJakub Gold | Jakub Gold |
 Alina JanowskaLucyna | Lucyna |
 Elżbieta KępińskaKazia, Malina's Niece | Kazia, Malina's Niece |
 Jan CiecierskiJózef Malina | Józef Malina |
 Tadeusz Bartosik"Professor" Pankrat | "Professor" Pankrat |
| WWładysław KowalskiFiałka / Jakub Gold (voice) | Fiałka / Jakub Gold (voice) |
 Irena NettoJakub's Mother | Jakub's Mother |
 Beata TyszkiewiczStasia | Stasia |
| JJan IbelGenio | Genio |
 Bogumił AntczakPrisoner (uncredited) | Prisoner (uncredited) |
| WWiesława ChojkowskaWiśka (uncredited) | Wiśka (uncredited) |
 Edmund FettingZygmunt, Guest at Lucyna's Party (uncredited) | Zygmunt, Guest at Lucyna's Party (uncredited) |
 Roland GłowackiGuest at Lucyna's Party (uncredited) | Guest at Lucyna's Party (uncredited) |
 Andrzej HerderGestapo Officer (uncredited) | Gestapo Officer (uncredited) |
| ZZygmunt HübnerGestapo Officer (uncredited) | Gestapo Officer (uncredited) |
 Zofia JamryWoman Blackmailing Malina (uncredited) | Woman Blackmailing Malina (uncredited) |
 Stanisław JaśkiewiczProfessor at a Lecture (uncredited) | Professor at a Lecture (uncredited) |
 Zbigniew JózefowiczGuest at Lucyna's Party (uncredited) | Guest at Lucyna's Party (uncredited) |
 Edward KowalczykPoliceman (uncredited) | Policeman (uncredited) |
 Zygmunt Listkiewicz(uncredited) | (uncredited) |
 Jerzy ŁapińskiCaroller (uncredited) | Caroller (uncredited) |
 Zdzisław MaklakiewiczONR Member (uncredited) | ONR Member (uncredited) |
 Zygmunt MalawskiPrinter (uncredited) | Printer (uncredited) |
 Roman PolanskiPartner of Malina's Blackmailer (uncredited) | Partner of Malina's Blackmailer (uncredited) |
 Ryszard Pracz(uncredited) | (uncredited) |
 Ryszard RonczewskiPrison Guard (uncredited) | Prison Guard (uncredited) |
 Magda Teresa WójcikWoman at Lucyna's Party (uncredited) | Woman at Lucyna's Party (uncredited) |
 Tomasz ZaliwskiPrisoner (uncredited) | Prisoner (uncredited) |
 Andrzej ŻuławskiKilled Student (uncredited) | Killed Student (uncredited) |
