Anyone who claims that you can't live with half a heart should be invited to a fairy tale about a king who once gained a crown in exchange for half his own heart. He gained a crown for part of his heart, but he lost much more – himself, his wife and his child. The prince must undergo difficult trials and fight a witch to save King Oskar and the kingdom...
Unfortunately the movie Tajemství is not yet available on Disney Plus.
| Directing | Svatava Simonová | Director |
| Camera | Milan Dostál | Director of Photography |
| Writing | Jarmila Turnovská | Creative Producer |
| Production | Ivana Průchová | Executive Producer |
| Writing | Petr Janiš | Screenplay |
| Crew | Jiří Dufek | Dramaturgy |
| Sound | Ladislav Simon | Original Music Composer |
| Sound | Stanislav Kočka | Music Director |
| Crew | Robert Balogh | Choreographer |
| Art | Jan Skarpíšek | Set Designer |
| Costume & Make-Up | Dagmar Březinová | Costume Design |
| Sound | Václav Nosek | Sound |
| Editing | Rudolf Vodrážka | Editor |
| Editing | Marie Maršálková | Editor |
| Editing | Mirko Veselý | Editor |
| Costume & Make-Up | Květa Holasová | Makeup & Hair |
| Costume & Make-Up | René Stejskal | Makeup & Hair |
| Camera | Božek Slavík | Camera Operator |
| Camera | Jaroslav Šenfelder | Camera Operator |
| Camera | Josef Veselý | Camera Operator |
| Camera | Jaroslav Kukrál | Camera Operator |
| Directing | Jana Rezková | Script Supervisor |
| Directing | Jitka Musilová | Second Assistant Director |
| Directing | Olga Švarcová | First Assistant Director |
| Production | Marie Helclová | Production Manager |
