A young customs officer is given an important mission: to investigate drug trafficking on the Belgian border. Incognito, he goes to the place where he easily spots the gangsters.
| Actor | Role |
|---|---|
| DDaniel ClériceNot listed | Not listed |
| LLine DarielNot listed | Not listed |
 Anne-Marie DuverneyNot listed | Not listed |
 Jimmy GaillardInspector Girard | Inspector Girard |
| MMarcel LaporteNot listed | Not listed |
 René GéninNot listed | Not listed |
 Jacques VarennesGarbo | Garbo |