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