“The Carpathians are medieval!” one character bellows, and this tale of the tree-chopper Petro, his faithless wife Marijka, and various scheming businessmen and foremen does little to disprove the assertion. Interestingly filmed with a nonprofessional cast recruited from the region, Faithless Marijka may have a neorealist conceit, but its direction is utterly futuristic, filled with the lightning-fast montage techniques and low-angle camera of the Soviet avant-garde (along with its invigorating agitprop).
| Directing | Vladislav Vančura | Director |
| Production | Ladislav Kolda | Producer |
| Writing | Ivan Olbracht | Story |
| Writing | Ivan Olbracht | Screenplay |
| Writing | Karel Nový | Screenplay |
| Camera | Jaroslav Blažek | Director of Photography |
| Camera | Václav Hanuš | Assistant Camera |
| Art | Bedřich Feuerstein | Production Design |
| Editing | Jiří Slavíček | Editor |
| Sound | Josef Zora | Sound |
| Production | Ladislav Kolda | Production Manager |
| Camera | Willy Ströminger | Still Photographer |
| Directing | Jiří Weiss | Assistant Director Trainee |
| Camera | Jiří Weiss | Camera Trainee |
| Sound | František Škvor | Conductor |
| Sound | Bohuslav Martinů | Original Music Composer |
