Tijdens een zomervakantie ontdekken twee jongens op een oude zolder een anti-zwaartekrachtkanon.
Nee, helaas is Tajna starog tavana nog niet beschikbaar op Netflix in Nederland.
| Directing | Vladimir Tadej | Director |
| Writing | Jaroslav Petřík | Screenplay |
| Writing | Vladimir Tadej | Screenplay |
| Directing | Ivan Frič | First Assistant Director |
| Directing | Vanja Pinter | First Assistant Director |
| Directing | Dragutin Krencer | Assistant Director |
| Directing | Věra Dvořáková | Assistant Director |
| Directing | František Hlaváček | Assistant Director |
| Writing | Mladen Bjažić | Book |
| Writing | Zvonimir Furtinger | Book |
| Crew | Jan Gogola | Dramaturgy |
| Crew | Mate Relja | Dramaturgy |
| Camera | Jiří Kolín | Director of Photography |
| Camera | Branko Knez | Director of Photography |
| Camera | Vladimír Kolář | Camera Operator |
| Camera | Dalibor Michalčík | Assistant Camera |
| Camera | Stanislav Jesih | Assistant Camera |
| Art | Zdeněk Rozkopal | Production Design |
| Art | Petr Smola | Assistant Production Design |
| Art | Otto Buchta | Set Decoration |
| Art | Miroslav Juras | Set Decoration |
| Art | Ivo Stepan | Set Decoration |
| Art | Jiří Plášil | Set Decoration |
| Art | Josef Vojtásek | Set Decoration |
| Costume & Make-Up | Vladimir Hrs | Costumer |
| Costume & Make-Up | Zvonko Meštrović | Costumer |
| Costume & Make-Up | Marie Uherková | Costumer |
| Costume & Make-Up | Snježana Tomljenović 'Buba' | Makeup & Hair |
| Costume & Make-Up | Ivo Strangmüller | Makeup & Hair |
| Editing | Antonín Štrojsa | Editor |
| Editing | Žana Gerova | Editor |
| Editing | Vlasta Malotová | Assistant Editor |
| Editing | Marie Vrlová | Assistant Editor |
| Sound | Radomír Koutek | Sound |
| Sound | Mladen Prebil | Sound |
| Sound | Jitka Zvirocká | Sound Effects |
| Sound | Ladislav Procházka | Sound Assistant |
| Sound | Zdeněk Skaunic | Sound Assistant |
| Crew | Jiří Rumler | Special Effects |
| Crew | Boris Masník | Special Effects |
| Crew | Marijan Karoglan | Special Effects |
| Production | Rudolf Polák | Production Manager |
| Production | Drago Bilić | Production Manager |
| Production | Vlado Ivančić | Unit Production Manager |
| Production | Zdenka Kek | Unit Production Manager |
| Production | Věra Kopecká | Unit Production Manager |
| Production | Emir Čejvan | Unit Production Manager |
| Production | Božena Mihavec | Unit Production Manager |
| Production | Petr Svozílek | Unit Production Manager |
| Production | Damir Terešak | Unit Production Manager |
| Production | Jiří Zemanec | Unit Production Manager |
| Production | Ludmila Krupová | Assistant Production Manager |
| Camera | Jiří Kolín | Still Photographer |
| Sound | Arsen Dedić | Original Music Composer |
| Sound | Štěpán Koníček | Conductor |
