Vladimír Ráž

Dr. Václav Pánek

Rudolf Deyl

Sebek - captain of SNB

Jan Pivec

Driver Hába

Vladimír Hlavatý

Janitor

Jaroslav Marvan

Zouplna

Felix le Breux

Director

Ferdinand Krůta

Laboratory

Mirko Musil

Policeman

Miloš Vavruška

Investigator #2