Jean Le Poulain

as John Mac Lesby / Jules Trombonne

Maria Pacôme

as Lady Lucy Guilvaillant

Lucie Dolène

as Dorothy Baker

Jean-Simon Prévost

as Arthur Gordon de Baskerville

Francis Joffo

as Lieutenant Campbell

Annick Le Goff

as Polly Baker

Claude Lefebvre

as Robert

Annick Roux

as Jennifer