Trailer
 | Jan Tříska as Jan Svozil |
| Jana Hliňáková |
| Jaroslav Rava as Stanislav Hradecký |
 | Jana Hlaváčková as Vlasta Martínková |
 | Gabriela Wilhelmová as Hana |
 | Zdena Herfortová as Eva Svozilová |
 | Oldřich Vykypěl as ROH chairman |
| Oldřich Slavík as Jaroslav Stehlík (uncredited) |
| Jiří Hanák as Miroslav Janoušek (uncredited) |
 | Vilém Pfeiffer as Bartoněk (uncredited) |
| Jiří Dušek as Zdražil (uncredited) |
 | Milan Pásek as Institute director (uncredited) |
| Karel Adam as Department manager (uncredited) |
| Helena Trýbová as Scientist (uncredited) |
| Vladimír Pavlar as Doc. Rozehnal (uncredited) |
| Bohumil Slezáček as Professor (uncredited) |
| Arnošt Navrátil as Doctor (uncredited) |
| Sylvie Nitrová as Nurse (uncredited) |
| Marcela Dürrová as Laboratory assistant (uncredited) |
 | Miroslav Donutil as Assistant (uncredited) |
| Milan Kročil as Assistant (uncredited) |
 | Zdeněk Maryška as Assistant (uncredited) |
| Zdeněk Dryšl as Houseman (uncredited) |
 | Jana Gazdíková as Secretary (uncredited) |
| Blažena Rýznarová as Official (uncredited) |
| Markéta Rauschgoldová as Canteen assistant (uncredited) |
| Writing | |
| Zdeněk Čecháček | Story |
Crew | |
| Jiří Daněk | Dramaturgy |
Sound | |
| Pavel Blatný | Original Music Composer |
Costume & Make-Up | |
| Oldřich Hubáček | Costume Design |
Writing | |
| Zdeněk Čecháček | Screenplay |
Art | |
| Luděk Škuta | Set Designer |
Sound | |
| Rudolf Večeřa | Sound |
Editing | |
| Alena Hachlová | Editor |
Production | |
| Ilona Stáňová | Production Manager |
Camera | |
| Jiří Kačírek | Director of Photography |
Directing | |
| Vojtěch Štursa | Director |
