No image
Cast
Jan Tříska
Jan Svozil
Oldřich Vykypěl
ROH chairman
Milan Pásek
Institute director (uncredited)
Jana Hlaváčková
Vlasta Martínková
Zdena Herfortová
Eva Svozilová
Vilém Pfeiffer
Bartoněk (uncredited)
Zdeněk Maryška
Assistant (uncredited)
Jana Gazdíková
Secretary (uncredited)
Gabriela Wilhelmová
Hana
Miroslav Donutil
Assistant (uncredited)