Unknown

Unknown

Licaire

Un docteur

Unknown

M. de Montesson

Le procureur

Un diplomate (uncredited)

Professor

Un docteur du train (uncredited)

Professor Peccavi

Member of the circle

Examiner

Examiner (uncredited)

Chemist

le vénérable vieillard

Notary (uncredited)

Professor Georges Limousin (uncredited)

Man at Rouletabille's party (uncredited)

Le mage

Le médecin légiste

Valet (uncredited)

Doctor

Antoine

Unknown

Unknown

Unknown

Unknown

Mathurin

Unknown

Unknown

Duke of Bocanegra Sr.

Un médecin

Albert, le concierge (uncredited)

Unknown

(uncredited)

Unknown

Le fossoyeur

Un locataire

L'instituteur

Comte de Larnac

Ferdinand Albaret