A small town is one day visited by a priest who is there on a secret mission. He is a member of the Inquisition sent to investigate the activities of a local miller. The miller and his son are the descendants of an old family whose ancestral home burned down a century ago, but was rebuilt from scratch. The miller inherited much of his knowledge about the land, water, and a building's stability from generations of family experience. His reputation for finding water and predicting when a structure might collapse have come to the attention of the Inquisition -surely he must be in league with the Devil.
Unfortunately the movie The Devil's Trap is not yet available on Disney Plus.
| Directing | František Vláčil | Director |
| Writing | Alfred Technik | Novel |
| Directing | Jaroslav Beránek | First Assistant Director |
| Editing | Jitka Šulcová | Assistant Editor |
| Costume & Make-Up | Heda Aksamitová | Makeup & Hair |
| Art | Jan Drvota | Set Decoration |
| Costume & Make-Up | Vladimír Černý | Makeup & Hair |
| Camera | Rudolf Milič | Assistant Camera |
| Lighting | Antonín Heřman | Gaffer |
| Writing | Bedřich Kubala | Creative Producer |
| Costume & Make-Up | František Čížek | Makeup & Hair |
| Sound | František Fabián | Sound |
| Production | Karel Škorpík | Unit Production Manager |
| Art | Karel Škvor | Production Design |
| Costume & Make-Up | František Mádl | Costumer |
| Art | Jiří Cvrček | Set Decoration |
| Costume & Make-Up | Slávka Doležalová-Kulhavá | Costumer |
| Sound | Bohumír Brunclík | Sound Effects |
| Crew | Zdena Pavlátová | Script |
| Sound | Zdeněk Liška | Original Music Composer |
| Production | Ladislav Novotný | Executive Producer |
| Directing | Milan Kadlec | Assistant Director |
| Art | Jan Vrňata | Set Decoration |
| Sound | František Belfín | Conductor |
| Camera | Miroslav Sinkule | Camera Operator |
| Production | Miroslav Dousek | Assistant Production Manager |
| Art | Oldřich Okáč | Assistant Production Design |
| Production | Věra Kadlecová | Production Manager |
| Camera | Růžena Nováková | Clapper Loader |
| Production | Václav Havlík | Unit Production Manager |
| Camera | Antonín Stránský | Still Photographer |
| Writing | Miloš Václav Kratochvíl | Screenplay |
| Writing | František A. Dvořák | Screenplay |
| Costume & Make-Up | Theodor Pištěk | Costume Design |
| Editing | Miroslav Hájek | Editor |
| Camera | Rudolf Milič | Director of Photography |
