A group of children is trying to solve a mystery related to the diamonds smuggling.
| Actor | Role |
|---|---|
 Michael HofbauerLáda | Láda |
| BBoris KubíčekJanouch | Janouch |
 Pavlína MourkováZuzana | Zuzana |
| FFrantišek KokejlDiesbach | Diesbach |
| KKarel KoloušekHrazdíra | Hrazdíra |
| JJan FaltýnekParízek | Parízek |
 Miroslav ZounarNot listed | Not listed |
| VVladimír PtáčekMojdl | Mojdl |
 Jiří PleskotNot listed | Not listed |
 Vlastimil ČaněkNot listed | Not listed |
 Dáša NeblechováNot listed | Not listed |
 Ondřej VetchýNot listed | Not listed |
 Jitka ZelenohorskáNot listed | Not listed |
 Lukáš VaculíkNot listed | Not listed |
| JJaroslav ChocNot listed | Not listed |
| JJiřina BíláNot listed | Not listed |
| JJiří ČadaNot listed | Not listed |
| VVlastimil Čaněk ml.Not listed | Not listed |
| SStanislav ČervenýNot listed | Not listed |
 Jan VokurkaNot listed | Not listed |
| JJosef KrausNot listed | Not listed |
| OOtto HöferNot listed | Not listed |
| LLadislav KyrbisNot listed | Not listed |
| TTomáš PrukaNot listed | Not listed |
| BBohuslav RadaNot listed | Not listed |
| JJosef StřechaNot listed | Not listed |
| MMiloslav ŠindlerNot listed | Not listed |
| JJaroslava ŠtrachalováNot listed | Not listed |
| AAdolf JannNot listed | Not listed |
| VVáclav MašekNot listed | Not listed |