Although suspected and hunted down by policeman Sherlock Coco and inspector Hector, the Pieds Nickelés (Croquignol, Filochard and Ribouldingue) manage to save the legacy of Monsieur Miradoux, who will be very grateful to them.
| Actor | Role |
|---|---|
 Maurice BaquetRibouldingue | Ribouldingue |
 RellysCroquignol | Croquignol |
 Jean ParédèsFilochard | Filochard |
 Fred PasqualiSherlococos | Sherlococos |
| GGisèle FrançoisSolange | Solange |
 Marcelle MonthilMadame Miradoux | Madame Miradoux |
 Solange CertainLa secrétaire | La secrétaire |
| RRosie AderLa bonne | La bonne |
 Luc AndrieuxHector | Hector |
 Pierre OlafSanchez | Sanchez |
 Frédéric DuvallèsMonsieur Miradoux | Monsieur Miradoux |
| AAndré ToscanoJacques | Jacques |
| PPierre MéréCristobal | Cristobal |
| LLucien CharbonnierMaître Balandard | Maître Balandard |
| FFernand GilbertLe marin | Le marin |
 Gérard SétyLe capitaine | Le capitaine |
| JJean-Jacques DaubinUn passager | Un passager |
| AAgramontNot listed | Not listed |
| FFrancisco AgramonteNot listed | Not listed |
| PPhilippe de ChériseyNot listed | Not listed |
| AArsenio FreignacNot listed | Not listed |
 Maurice MarceauNot listed | Not listed |