Interpol detective Wilton, known for his powers of deduction, is set on a gang of bank and jewel robbers who are up to mischief in Marseille. Despite some false leads, he can shed light on the murky affair. A conventional but relatively exciting crime film that strives for atmospheric density but is not immune to the clichés of the genre. Charpentier's trivial novel is the first crime thriller in a series that pretends to be the publication of Commissioner Wilton's diaries.
| Actor | Role |
|---|---|
 Ron RandellAllan Wilton, Kriminalkommissar | Allan Wilton, Kriminalkommissar |
 Paul EsserInspektor Antoine Creux | Inspektor Antoine Creux |
 Bum KrügerChefinspektor Leon Vaudrac | Chefinspektor Leon Vaudrac |
 Pinkas BraunRoger Marton, Antiquitätenhändler | Roger Marton, Antiquitätenhändler |
| VVirginia RodinCamille Laroche, Barsängerin | Camille Laroche, Barsängerin |
 Christiane MaybachMarion, Bardame | Marion, Bardame |
 Laya RakiSuzanne | Suzanne |
 Roger HaninErnest Charnot, Barbesitzer | Ernest Charnot, Barbesitzer |
| BBarbara FreyMichele Michaud, Bankbeamtin | Michele Michaud, Bankbeamtin |
| DDemeter Bitenc(uncredited) | (uncredited) |
| LLaci Cigoj(uncredited) | (uncredited) |
| MMarcel Correnson(uncredited) | (uncredited) |
| GGilles Legris(uncredited) | (uncredited) |
 Jean Panisse(uncredited) | (uncredited) |
| RRégis Rubaud(uncredited) | (uncredited) |
| PPaul Sum(uncredited) | (uncredited) |
| SSlavko Švajger(uncredited) | (uncredited) |