Klec

Jan Tříska

as Jan Svozil

Jana Hliňáková

as

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)