Jacques de Nisson, a rich man, has a new mistress, Lucie Cavelier. Which does not prevent him from courting Florence, the wife of his lawyer friend Forestier. One day, Jacques is found murdered and chief-inspector Candély is sent on the spot to investigate. Jean, the victim's butler, Lucie as well as Florence are suspected in turns but the real murderer is finally identified thanks to his fingerprints.

Alice Field
Florence Forestier

Paulette Dubost
Lucie Cavelier

Jean-Max
Maître Forestier

Pierre Larquey
Richard, pastry chef
Abel Jacquin
Jean Barnet, valet

Paul Amiot
Inspector Robert

Myno Burney
Suzanne

Christiane Dor

Jeanne Fusier-Gir
Florist

Émile Genevois
Pastry boy

Robert Goupil
Mechanic

Madeleine Guitty
Madame Clapet, concierge

Rolla Norman
Jacques de Nissones
Oléo
Tessy

Philippe Richard