Martin Růžek as Dr. Sarrasin

Josef Vinklář as Profesor chemie Eric Janus

Petr Kostka as Van Hulshof

Jan Potměšil as Viktor

Jaromír Hanzlík as Ingenieur Marcel Zodiak / Moltke

Taťjana Medvecká as Alice

Josef Somr as Vent

Petr Čepek as Filbank

Vilém Besser as Arminius

Bořivoj Navrátil as Siniger

Josef Bláha as Captain

Čestmír Řanda as ředitel internátu

Karel Gult as

Josef Větrovec as Mallery

Miroslav Moravec as

Ferdinand Krůta as

Ladislav Potměšil as Dozor na internátu

Viktor Maurer as

Jan Pohan as

Václav Kaňkovský as

Václav Kotva as

Tomáš Holý as

Sylva Kamenická as

Jiří Havel as

Mirko Musil as

Ladislav Trojan as

Zdeněk Kutil as

Zdeněk Srstka as

Karel Augusta as

Jaroslav Horák as

Martin Hron as

Zdeňka Rosolová as

Zdeněk Skalický as

Bohumil Vávra as

Josef Velda as

Richard Záhorský as

Karel Fiala as

Jiří Kodet as

Milan Mach as

J. Petřík as

Jan Přeučil as Dustojník

Jana Bermanová as

Jan Cmíral as

Tomáš Juřička as

Dana Kořalníková as

Miloslav Machoň as

Renata Mašková as

Hana Ornestová as

Jiřina Rottová as

Miluše Šplechtová as

Zuzana Bláhová as

Jan Cmíral as

Jaroslav Kotrba as

Antonín Hardt as Tajny

Petr Drozda as

Ladislav Lahoda as

Roman Skamene as

Jitka Jandáčková as

Libor Hruška as

Karel Engel as

Vladimír Ráž as Narrator (voice)

Vladimír Pospíšil as Worker (voice) / Journalist (voice)

Bohuslav Ličman as Worker (voice)

Jan Sedliský as Speaker (voice)