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