97 mins | Drama, History | May 14, 1971
97 mins | Drama, History | May 14, 1971
| Producers | Filmové studio Barrandov |
| Original title | Klíč |
| Directors | Věra Ticháčková, Vladimír Čech, Bohumil Koška |
| Writers | Kristian Topič, Zdeněk Dufek, Vladimír Čech, Kamil Pixa |
as Jan Zika
as Friedrich
as Nergl
as Milada
as Blazena Preislerová
as Josef Preisler
as Nemecký chirurg
as Jankovský
as Ziková
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as radista Černý
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as Doktor
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as Red Square Guide
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as Commentary (voice)
as radista Černý (voice)
