A war drama that tells the story of the discovery of the illegal AL printing works by the Nazis, showing the activities of the left-wing underground in the occupied capital.
| Directing | Antoni Bohdziewicz | Director |
| Sound | Kazimierz Serocki | Music |
| Editing | Antoni Bohdziewicz | Editor |
| Art | Anatol Radzinowicz | Production Design |
| Writing | Tadeusz Borowski | Dialogue |
| Camera | Stanisław Wohl | Director of Photography |
| Directing | Zbigniew Kuźmiński | Assistant Director |
| Directing | Zbigniew Niemczynowski | Assistant Director |
| Writing | Antoni Bohdziewicz | Storyboard |
| Writing | Ariadna Demkowska | Storyboard |
| Sound | Józef Koprowicz | Sound |
| Costume & Make-Up | Jan Dobracki | Makeup Artist |
| Production | Stefan Adamek | Unit Manager |
| Production | Marian Lis | Unit Manager |
| Writing | Antoni Bohdziewicz | Screenplay |
| Writing | Ariadna Demkowska | Screenplay |
| Writing | Wanda Żółkiewska | Screenplay |
| Writing | Jan Kott | Screenplay |
| Camera | Seweryn Kruszyński | First Assistant Camera |
| Camera | Feliks Średnicki | Assistant Camera |
| Camera | Leopold Blancard | Assistant Camera |
| Lighting | Józef Marczak | Lighting Technician |
| Art | Józef Galewski | Assistant Production Design |
| Art | Marek Iwaszkiewicz | Assistant Production Design |
| Art | Wojciech Krysztofiak | Assistant Production Design |
| Art | Czesław Piaskowski | Assistant Production Design |
| Art | Ryszard Potocki | Assistant Production Design |
| Sound | Witold Rowicki | Conductor |
| Sound | Lidia Pstrokońska | Sound Assistant |
| Production | Aleksander Suchcicki | Production Manager |
| Production | Zygmunt Król | Production Manager |