A group of teenagers are trying to solve a mystery of a puzzle created and left to them by the dead boy.
Unfortunately the movie Mystery of the Puzzle is not yet available on HBO Max.
| Directing | Petr Kotek | Director |
| Writing | Jaroslav Foglar | Novel |
| Production | Petr Kotek | Co-Producer |
| Writing | Ivan Arsenjev | Screenplay |
| Writing | Petr Kotek | Screenplay |
| Sound | Petr Malásek | Original Music Composer |
| Directing | Olga Kubištová | First Assistant Director |
| Directing | Petr Erben | First Assistant Director |
| Directing | Dagmar Zelenková | Script Supervisor |
| Crew | Jiří Soukup | Dramaturgy |
| Camera | Ivan Šimůnek | Camera Operator |
| Camera | Jiří Pechar | Steadicam Operator |
| Camera | Josef Černušák | Grip |
| Camera | Radek Faltejsek | Grip |
| Art | Michal Krška | Production Design |
| Art | Vladimír Heiser | Assistant Production Design |
| Art | Milan Šveňha | Property Master |
| Art | Josef Calta | Props |
| Art | Jaroslav Lehman | Props |
| Art | Milan Šefrna | Props |
| Costume & Make-Up | Martin Kurel | Costume Design |
| Costume & Make-Up | Zuzana Máchová | Lead Costumer |
| Costume & Make-Up | Mária Hubáčková | Costumer |
| Costume & Make-Up | Marta Jenčová | Costumer |
| Costume & Make-Up | Aleš Kocián | Makeup & Hair |
| Costume & Make-Up | Tereza Kolihová | Makeup & Hair |
| Editing | Michal Cingroš | Editor |
| Editing | Monika Marková | Assistant Editor |
| Editing | Renata Pařezová | Assistant Editor |
| Sound | Karel Jaroš | Sound |
| Sound | Jiří Kejř | Sound |
| Sound | Ivo Špalj | Sound |
| Sound | Miloslav Vojslavský | Sound Assistant |
| Production | Jan Šuster | Producer |
| Production | Pavel Nový | Production Manager |
| Production | Jaroslav Čipera | Unit Production Manager |
| Production | Lenka Jandová | Unit Production Manager |
| Production | Vladimíra Kopecká | Unit Production Manager |
| Production | Ivan Vakaráč | Unit Production Manager |
| Production | Michaela Antošíková | Assistant Production Manager |
| Production | Pavel Bačkovský | Assistant Production Manager |
| Production | Rudolf Vachuda | Assistant Production Manager |
| Crew | Jaroslav Tomsa | Technical Advisor |
| Lighting | Jiří Cuřín | Gaffer |
| Camera | Jan Jindra | Still Photographer |
| Sound | Mario Klemens | Conductor |
| Sound | Juraj Ďurovič | Music Director |
| Camera | Miro Gábor | Camera Operator |
