Jane Sourza as Miss Alice Postic, switchboard operator

Raymond Souplex as Inspector Henri Grandin

Colette Gérard as Virginie Renoir, typist of the study

Noëlle Musard as Suzanne Brissard, notary's secretary

Robert Thomas as Mr. Laroche (a corpse client) / Mr. Logan, 1st clerk

Vivette Galy as Mrs. Tachard, dissatisfied customer

Jacques Verlier as Robert de Charancé, second clerk of the study

Marcel Charvey as Maître Rocher, notary

Catherine Gay as Mrs. Clara Rocher, wife of the notary

Edmond Ardisson as Maximin, police officer