The banker René Duchêne, alias Georges Baudin known as “Monsieur”

Edmond Bernadac, industrialist

Suzanne, former maid of "Monsieur"

Mrs. Elisabeth Bernadac

Mrs. Bernadac, Edmond's mother

“Monsieur”’s mother-in-law

“Monsieur”’s father-in-law

Antoine, small-time crook

José, small-time crook

Private detective

Nathalie Bernadac, daughter of Edmond

Maître Flamand, notary, friend of “Monsieur”

Michel Corbeiln, writer

Alain Bernadac, son of Edmond

Justine, Bernadacs' cook

Marc, small-time crook

Mrs. Danoni

Shipowner Danoni, guest of the Bernadacs

"Monsieur's" manservant

Boss of the bistro

Boss of Suzanne's hotel

Locksmith of the safe

Cafeteria waitress

Unembarrassed customer in the

Tailor

Vicar

Doctor

Mr. Bretteville, guest of the Bernadacs

Decorator

Customer at the bistro (uncredited)

Consumer (uncredited)

Restaurant waitress (uncredited)

Bernadacs' gardener (uncredited)