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On the train to Prague, the bride-to-be Zuzana Vítová accidentally meets the clerk Dr. Karel Jánský. Upon arriving in Prague, it seems that Jánský follows the girl on her way from the station, but it turns out that the two of them have only a common journey. When Zuzana discovers that her fiancé Petr Klika is not at home and that she has lost the keys to his apartment, Dr. Jánský gallantly helps her and keeps her company until deep into the night...
Jiřina Bohdalová
Karel Höger
Vlasta Chramostová
Nataša Gollová
Jana Drbohlavová
Vlastimil Hašek
Čestmír Řanda
Jan Tříska
Josef Beyvl
Miloš Nesvadba
Zdeněk Dítě
Jiří Lír
Karla Chadimová
Secretary Houdková
Marie Rosůlková
Vilém Pruner
Jaroslav Moučka
Ella Šárková
Karel Gott
Karel Gott
Alena Kreuzmannová
Secretary Houdková (voice)