Simone Renant
Marianne Séverin
Michel Auclair
Michel Dunan, Alain's look-alike / Alain de Norbois, missing man
Marcel Herrand
Norbert, butler
René Blancard
Me Tirgen, lawyer
André Versini
Adrien
Guy Favières
Guillaume
René Hell
Player
Roger Bontemps
Inspector
Paul Delon
Inspector General Leroux
Teddy Bilis
Nicole Gamma
Jean-Jacques Duverger
Paul de Norbois
Robert Vattier
Adolphe Mercier, businessman
Jacques Castelot
Investigating judge
