as Le docteur Belhomme
as 'La Hurlette'
as Blaise Annequin
as M. Paul
as M. Arsène Marval, le chanteur âgé
as Jean-Paul
as Le commissaire Basquier
as Sosthène
as Inspector Masurel
as Self
as Inspecteur Legris
as Auctioneer
as Commissaire Lambert
as Priest
as Villeroy
as Charles
as le professeur Théodore Heldt
as Le convive de sang-froid
as Commissioner Muller
as Inspector Henri Grandin
as Commissioner Serval
as Bonneval
as Inspector Querneau
as Grippesous
as Commissioner Paoli
as Mr. Edouard
as Un chansonnier (uncredited)
as Self (archive footage)
as Concierge
as Stéphane Petitbourgeois, le mari expert-comptable
as Mr. Lepic
as Totor
as Étienne Ledru, commissaire de police
as Raymond Boyer / Boyeski, le père du jeune chef d’orchestre
as Inspecteur principal Bourrel / Commissaire Bourrel
as L'inspecteur Henri Grandin
