Dubois
Police Commissioner Robert Renard
Tracing Service Clerk
Grotier (uncredited)
Alphonse
Joubert
Jerome Kitzel
Cognac Pete
La Badie
John Mudd (uncredited)
Monsieur Malaquaise
Louis Foral
Purser (uncredited)
Jacques Carnet
Guillaumin
Prof. Romaine (uncredited)
Father Barraud (uncredited)
Prof. Roland Pavin
Antique Dealer
Louis Chabonet
Edward Durant
Count D'Arignon
Police Inspector at Sophie's Death (uncredited)