Jan Tříska

Jan Svozil

Acting

Jana Hliňáková

Acting

Jaroslav Rava

Stanislav Hradecký

Acting

Jana Hlaváčková

Vlasta Martínková

Acting

Gabriela Wilhelmová

Hana

Acting

Zdena Herfortová

Eva Svozilová

Acting

Oldřich Vykypěl

ROH chairman

Acting

Oldřich Slavík

Jaroslav Stehlík (uncredited)

Acting

Jiří Hanák

Miroslav Janoušek (uncredited)

Acting

Vilém Pfeiffer

Bartoněk (uncredited)

Acting

Jiří Dušek

Zdražil (uncredited)

Acting

Milan Pásek

Institute director (uncredited)

Acting

Karel Adam

Department manager (uncredited)

Acting

Helena Trýbová

Scientist (uncredited)

Acting

Vladimír Pavlar

Doc. Rozehnal (uncredited)

Acting

Bohumil Slezáček

Professor (uncredited)

Acting

Arnošt Navrátil

Doctor (uncredited)

Acting

Sylvie Nitrová

Nurse (uncredited)

Acting

Marcela Dürrová

Laboratory assistant (uncredited)

Acting

Miroslav Donutil

Assistant (uncredited)

Acting

Milan Kročil

Assistant (uncredited)

Acting

Zdeněk Maryška

Assistant (uncredited)

Acting

Zdeněk Dryšl

Houseman (uncredited)

Acting

Jana Gazdíková

Secretary (uncredited)

Acting

Blažena Rýznarová

Official (uncredited)

Acting

Markéta Rauschgoldová

Canteen assistant (uncredited)

Acting