A man who has just deposited a will with a notary is run over by a car. As his overcoat bears the name and address of Emile Blondin on a label, the police go there and discover that the dead man is not Emile Blondin. But this one is soon discovered murdered. The police then became interested in Georges Blondin, the victim's brother, whose goddaughter, Juliette, was also the notary's secretary.
| Actor | Role |
|---|---|
 Louise CarlettiJuliette | Juliette |
 Georges RollinFrançois | François |
 Raymond BussièresAchille | Achille |
 Frank VillardInspector Rolle | Inspector Rolle |
 Maurice SalabertMalaval | Malaval |
 Simone DeguyseGaby | Gaby |
 Marie BizetWorker | Worker |
 Marcel MaupiTramp | Tramp |
| AAlbert MontignyNot listed | Not listed |
 Max DejeanNot listed | Not listed |
 Pierre SergeolNotary | Notary |
| LLisa DorelNot listed | Not listed |
 Jacques HenleyBank manager | Bank manager |
 Henri NassietGeorges Blondin | Georges Blondin |
| RRenée DevillersLucie Blondin | Lucie Blondin |
 Léonce CorneCommissioner (uncredited) | Commissioner (uncredited) |
 François JouxCoffee boy (uncredited) | Coffee boy (uncredited) |
 Lucienne Le Marchand(uncredited) | (uncredited) |