As a gang of classy jewel thieves hop from one European country to another, an engineer rescues a woman from their clutches.
| Actor | Role |
|---|---|
 Brigitte HelmOlga | Olga |
 Gustaf GründgensAlexander | Alexander |
 Wolfgang LiebeneinerPierre | Pierre |
 Kurt VespermannFred | Fred |
| EErnst DumckeKommissar Léron | Kommissar Léron |
 Jakob TiedtkeJuwelier Dergan | Juwelier Dergan |
 Max GülstorffProfessor Ronnay | Professor Ronnay |
| PPaul HenckelsNot listed | Not listed |
| RRudolf BiebrachDer alte Gaston | Der alte Gaston |
| EElfriede JeraMarietta | Marietta |
 Hans DeppeNot listed | Not listed |
 Fritz GreinerNot listed | Not listed |
 Harry HardtNot listed | Not listed |
 Leo PeukertNot listed | Not listed |