¿Por qué lates, corazón? Cast & Crew
Claude DauphinPierre de Rougemont André LuguetCount d'Argay, ambassador Junie AstorCountess Florence d'Argay Charles DechampsBaron Dvorak Sylvain ItkineThe first thief Pierre FeuillèreThe second thief Julien CaretteYves Calubert Jean TissierRoland Médeville Roland ArmontelFirmin (uncredited) Marguerite de MorlayeLady at the Ball (uncredited) Sophie Desmarets(uncredited) Dora DollSecretary (uncredited) Jean JoffreMayor (uncredited) Jacques Mavel(uncredited) Marcelle MonthilMadame Aristide (uncredited) Geneviève MorelMarinette, student (uncredited) André NicolleInspector (uncredited) Robert OzanneDeputy Mayor (uncredited) Jean SylvainRoland's Witness (uncredited) Gregor RabinovitchProductor Léon BarsacqProduction Design Jean PerrierProduction Design Robert LefebvreDirector Of Photography Fred PasqualiAsistente de dirección Paul MisrakiCompositor de música original William Robert SivelSonido Pierre SchwabGerente de producción 
