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

Geneviève Page

Carole de Norbois