Two friends think that they've discovered a dangerous spy hiding in a mine shaft.

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Main Cast: Damian Damięcki, Maciej Damięcki, Michał Bustamante, Łukasz Żuławski, Ludwik Benoit, Barbara Fijewska, Gustaw Holoubek, Zbigniew Józefowicz, Jan Koecher, Stanisław Milski

Director: Wadim Berestowski

Writer: Edmund Niziurski

Editor: Halina Nawrocka

Cinematographer: Kazimierz Wawrzyniak

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