Karel Höger

Character: Kpt. Tůma

Josef Bek

Character: Lieutenant Frantisek Líbal

Oldřich Nový

Character: Jindrich Kraus, director of the hotel

Anna Pitašová

Character: Kraus' wife called Isa

Bohuš Záhorský

Character: Dr. Vopálenský

Jan Tříska

Character: laboratory assistant Mirek Zach

Miloš Nedbal

Character: magician Bonhardi (Ladislav Valenta)

Bohumil Šmída

Character: thief Josef Sesták

Oldřich Velen

Character: Lieutenant Jiri Florian

Marcela Martínková

Character: laboratory assistant Zdena Fisárková

Josef Abrhám

Character: witness Jirka Ruml

Libuše Geprtová

Character: Ruml's girl

Rudolf Deyl

Character:

Anna Gabrielová

Character: Krystofová

Hana Brožová

Character: Golf player

Miloslav Lipinský

Character: Dancer

Věra Burešová

Character: Dancer

Alena Martinovská

Character: Dancer

Antonín Kandert

Character: warehouseman Rendl

František Miroslav Doubrava

Character: member of the VB

Ota Motyčka

Character: Inspektor

František Hadrava

Character: chief

Josef Hlinomaz

Character: Receptionist

Bohumil Honsa

Character: Porter

Marta Kaňovská

Character: stranger

Eva Marie Kavanová

Character: Golf player

Lubomír Kostelka

Character: chief

František Kovářík

Character: old Mr. Mensík

Věra Langrová

Character: Receptionist

Václav Lohniský

Character: Receptionist

Vilém Pruner

Character: Waiter

Zdeněk Řehoř

Character: Lokvenc

Sonja Sázavská

Character: bartender Lenka

Giorgos Skalenakis

Character: stranger

Otto Šimánek

Character: Moravec

Zdeněk Týle

Character: Lifftboy

Gustav Nezval

Character: Chief of the VB

Věra Hanslíková

Character: Woman at interrogation

Gabriela Bártlová-Buddeusová

Character: Fikjzlová - woman at interrogation

Milka Balek-Brodská

Character: Rezácová - woman at interrogation

Milena Geislerová

Character: Stranger

Václav Wasserman

Character: Guest at the hotel

Karel Peyr

Character: Sochor - man at interrogation

Martin Vačkář

Character: Pikolík