![](https://image.tmdb.org/t/p/w92/4TNDanTjAxvSx3Kcj5zlfkViWVB.jpg)
Vladimír Ráž
Dr. Václav Pánek
![](https://image.tmdb.org/t/p/w92/vhvXOz1EKoyDt9kqbWNrUStnAKW.jpg)
Václav Voska
Dr. Vladimír Gajdos
![](https://image.tmdb.org/t/p/w92/aZE8aIMByKqsqgJSxBWBnGdkTXT.jpg)
Irena Kačírková
Dr. Lída Kafková
![](https://image.tmdb.org/t/p/w92/hLnwYb9A2siZCZp256EbJZNgt5F.jpg)
Rudolf Deyl
Sebek - captain of SNB
Zora Polanová
Marie Bosáková - assistant
![](https://image.tmdb.org/t/p/w92/9bioDfaHgX8I3wSt8gNqTQcol2i.jpg)
Jan Pivec
Driver Hába
![](https://image.tmdb.org/t/p/w92/7d5ORaAl1Qev7RVEgWwdJST52Ii.jpg)
Ladislav Pešek
Karel Chládek
![](https://image.tmdb.org/t/p/w92/fFI0apVLquQpg881xUGGaYAs83D.jpg)
Vladimír Hlavatý
Janitor
![](https://image.tmdb.org/t/p/w92/xkjJWL2SSkLfKR49IOdQArHYqb7.jpg)
Jaroslav Marvan
Zouplna
![](https://image.tmdb.org/t/p/w92/zBkJHMF2nB5d3RlrVPP3mOqUbuE.jpg)
Felix le Breux
Director
![](https://image.tmdb.org/t/p/w92/kv4AvFofPdjBJc41P5IfSsln2yB.jpg)
Miloš Nedbal
Ing. Karel Vlach
Ferdinand Krůta
Laboratory
Mirko Musil
Policeman
Jan Maška
Investigator #1
![](https://image.tmdb.org/t/p/w92/whBwmUmW2QYTVvm7lrljuoYjG44.jpg)
Miloš Vavruška
Investigator #2
Zdeněk Jelínek
Guest
Karel Krautgartner
Musician
Jiří Verberger
Hudebník-pianista
Karel Turnovský
Drummer
Adolf Šmíd
Trumpetista
Antonín Zíb
Commentary (voice)