During World War II, a German university professor creates a spy ring that supplies the Allies with information about Nazi plans...

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Main Cast: Karel Höger, Jana Brejchová, Leon Niemczyk, Ilja Prachař, Wilhelm Koch-Hooge, Vladimír Šmeral, Radovan Lukavský, Vladimír Brabec, Bořivoj Navrátil, Vlastimil Hašek

Director: Dušan Klein

Writer: Pavel Hajný

Editor: Josef Dobřichovský

Cinematographer: Jiří Stöhr

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