From a scientific enterprise, a large sum of money has been stolen, in addition, research protocols have been photographed...
| Actor | Role |
|---|---|
 Vladimír RážDr. Václav Pánek | Dr. Václav Pánek |
 Václav VoskaDr. Vladimír Gajdos | Dr. Vladimír Gajdos |
 Irena KačírkováDr. Lída Kafková | Dr. Lída Kafková |
 Rudolf DeylSebek - captain of SNB | Sebek - captain of SNB |
| ZZora PolanováMarie Bosáková - assistant | Marie Bosáková - assistant |
 Jan PivecDriver Hába | Driver Hába |
 Ladislav PešekKarel Chládek | Karel Chládek |
 Vladimír HlavatýJanitor | Janitor |
 Jaroslav MarvanZouplna | Zouplna |
 Felix le BreuxDirector | Director |
 Miloš NedbalIng. Karel Vlach | Ing. Karel Vlach |
| FFerdinand KrůtaLaboratory | Laboratory |
 Mirko MusilPoliceman | Policeman |
| JJan MaškaInvestigator #1 | Investigator #1 |
 Miloš VavruškaInvestigator #2 | Investigator #2 |
| ZZdeněk JelínekGuest | Guest |
| KKarel KrautgartnerMusician | Musician |
| JJiří VerbergerHudebník-pianista | Hudebník-pianista |
| KKarel TurnovskýDrummer | Drummer |
| AAdolf ŠmídTrumpetista | Trumpetista |
| JJosef SteiglNot listed | Not listed |
| AAntonín ZíbCommentary (voice) | Commentary (voice) |