Detective Klubíčko is searching for the murderer of a wealthy loan shark because he is the only one who does not believe that the victim's husband, the private entrepreneur Zakhar, could be the murderer. Inconsistencies in the statements gradually lead him to the real perpetrator. He is only able to convict him with the help of a crime reconstruction...
| Actor | Role |
|---|---|
 Jindřich PlachtaKlubíčko | Klubíčko |
 Zvonimir RogozFriedmann | Friedmann |
 Theodor PištěkZachar | Zachar |
| EEmanuel TrojanMaurin | Maurin |
 Ella NollováZemanová | Zemanová |
 Jarmila LhotováAda Friedmannová | Ada Friedmannová |
 Ljuba HermanováIrma Horthová | Irma Horthová |
 Gustav HilmarBaroch | Baroch |
| VVěra SkalskáBarochová | Barochová |
 Miroslav SvobodaVláďa | Vláďa |
| JJan Richtervězeň | vězeň |
 Zdena KavkováBoženka | Boženka |
| FFred Bulínsnoubenec | snoubenec |
 Ladislav Hemmerbratr paní Friedmannové | bratr paní Friedmannové |
| VVladimír Marekvyšetřující komisař | vyšetřující komisař |
| KKarel Postraneckýdetektiv | detektiv |
| GGustav FleischmanNot listed | Not listed |
 Jan W. SpeergerNot listed | Not listed |
| KKarel KučeraNot listed | Not listed |
| BBohdan LachmanNot listed | Not listed |
| KKarel NěmecNot listed | Not listed |
| FFrantišek JerhotNot listed | Not listed |
| BBobina HorkáNot listed | Not listed |
| FFerdinand JarkovskýNot listed | Not listed |
| RRudolf ŽákNot listed | Not listed |
| JJosef SteiglNot listed | Not listed |