The film revolves around Ekster. Ekster is the nickname of a shrewd extortionist who plays a game with the police. The action takes place in the diamond world.
| Actor | Role |
|---|---|
 Marc BoberHarry Weyler | Harry Weyler |
| LLudo BusschotsVandam | Vandam |
 Paul CammermansKessier | Kessier |
 Jo De MeyereEkster | Ekster |
| FFons DerreCafé-uitbater | Café-uitbater |
| LLia LeeMevrouw Mertens | Mevrouw Mertens |
| JJulien NicolaiNot listed | Not listed |
| UUgo PrinsenAdams | Adams |
 Ward De RavetSimon Wiedemeyer | Simon Wiedemeyer |
| JJeanine SchevernelsGaby Wiedemeyer | Gaby Wiedemeyer |
| AAndré ThijsNot listed | Not listed |
 Johan van AsscheRijkswachter | Rijkswachter |
| MMonique Van CampenhoutNot listed | Not listed |
| CChris VerhaegheHostess | Hostess |
 Luk WynsRijkswachter | Rijkswachter |