Daniel Gélin

as Simon Belin

Jeanne Moreau

as Jeanne Fortin

Lino Ventura

as Lino Ferrari

Georges Flamant

as Inspector Segalier

Albert Augier

as Dédé

Aimé Clariond

as Charlie Bianchi

Roland Armontel

as Alexandre Bérimont

Moustache

as Davros

Joëlle Bernard

as Mauricette

Robert Rollis

as Lucien Morisot

Evelyne Rey

as Bélina

Jannick Arvel

as Thérese

Jacques Marin

as Thérese

Jean Toulout

as Président des Assises

Jean-Marie Rivière

as Un comédien

Jo Peignot

as Patron du café

Jean Degrave

as Réceptionniste de l'hôtel

Marcel Pérès

as Propriétaire du thêatre

José Quaglio

as Un acteur

François Joux

as Secrétaire du commissaire

Guy Bertret

Maurice Biraud

Eddy Debray

Maurice Gardett

Gabriel Gobin

Charles Lemontier

Dominique Page

Liliane Robin

Marie Sabouret

as Patronnesse du café (uncredited)

Jacques Muller