Tod Slaughter

Chevalier Lucio del Gardo

Marjorie Taylor

Cecile de Brisson

John Warwick

Lucien Cortier

Aubrey Mallalieu

M. de Brisson

Robert Adair

Police Inspector Gouffert

Wallace Evennett

Professor Le Blanc

Leonard Henry

Gaston, the Cook

Kay Lewis

Babette, the Maid