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Tadeusz Borowski as Marian Rejewski |
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Piotr Fronczewski as Jerzy Rózycki |
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Piotr Garlicki as Henryk Zygalski |
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Tadeusz Pluciński as inżynier Antoni Palluth |
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Janusz Zakrzeński as Col. Gwido Langer |
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Andrzej Szczepkowski as Col. Gustave Bertrand |
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Wojciech Duryasz as Mechanic Edward Fokczynski |
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Andrzej Lajborek as Heinz Hoger |
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Jerzy Kamas as Commodore Alistair Denniston |
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Ewa Borowik as Irena Olanska |
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Halina Golanko as German spy |
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Jolanta Wołłejko as Jadwiga Palluth |
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Ewa Żukowska as Barbara Różycka |
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Wiesława Niemyska as Bertrand's wife |
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Grażyna Marzec as Irena Rejewska |
| Writing | Roman Wionczek | Writer |
| Writing | Stanislaw Strumph-Wojtkiewicz | Writer |
| Sound | Henryk Kuźniak | Original Music Composer |
| Directing | Roman Wionczek | Director |
| Sound | Jerzy Maksymiuk | Original Music Composer |
| Editing | Jadwiga Zajiček | Editor |
| Crew | Jacek Zygadło | Cinematography |
| Editing | Malgorzata Domalik | Editor |
| Production | Kazimierz Sioma | Production Manager |
| Editing | Zbigniew Nawrocki | Editor |
