Klec

Jan Tříska

Jan Svozil

Jana Hliňáková

Jaroslav Rava

Stanislav Hradecký

Jana Hlaváčková

Vlasta Martínková

Gabriela Wilhelmová

Hana

Zdena Herfortová

Eva Svozilová

Oldřich Vykypěl

ROH chairman

Oldřich Slavík

Jaroslav Stehlík (uncredited)

Jiří Hanák

Miroslav Janoušek (uncredited)

Vilém Pfeiffer

Bartoněk (uncredited)

Jiří Dušek

Zdražil (uncredited)

Milan Pásek

Institute director (uncredited)

Karel Adam

Department manager (uncredited)

Helena Trýbová

Scientist (uncredited)

Vladimír Pavlar

Doc. Rozehnal (uncredited)

Bohumil Slezáček

Professor (uncredited)

Arnošt Navrátil

Doctor (uncredited)

Sylvie Nitrová

Nurse (uncredited)

Marcela Dürrová

Laboratory assistant (uncredited)

Miroslav Donutil

Assistant (uncredited)

Pavel Blatný

Original Music Composer

Alena Hachlová

Editor

Luděk Škuta

Set Designer

Jiří Daněk

Dramaturgy

Zdeněk Čecháček

Story, Screenplay

Rudolf Večeřa

Sound

Ilona Stáňová

Production Manager

Jiří Kačírek

Director of Photography

Vojtěch Štursa

Director

Oldřich Hubáček

Costume Design