Cedric Hardwicke
— Captain Alfred Dreyfus
Charles Carson
— Colonel Georges Picquart
George Merritt
— Émile Zola
Sam Livesey
— Fernand Labori
Beatrix Thomson
— Lucie Dreyfus
Garry Marsh
— Major Ferdinand Walsin Esterhazy
Henry Caine
— Colonel Hubert-Joseph Henry
George Skillan
— Major Armand du Paty de Clam
Leonard Shepherd
— Georges Clemenceau
Arthur Hardy
— General Auguste Mercier
Gerald Kay Souper
— General Raoul Le Mouton de Boisdeffre
Alexander Sarner
— Matthieu Dreyfus
Frederick Leister
— Edgar Demange
J. Fisher White
— General Georges-Gabriel de Pellieux
Abraham Sofaer
— Dubois
J. Leslie Frith
— Alphonse Bertillon
Violet Howard
— Marguerite
Reginald Dance
— President, Zola Trial
George Zucco
— Jacques Marie Eugène Godefroy Cavaignac
Nigel Barrie
— Captain Jules Lauth
Randle Ayrton
— President, Dreyfus Court Martial
Winifred Evans
— Esterhazy's Admirer
Judith Gick
— Esterhazy's Admirer
Ralph Richardson
— Extra
Oliver Raphael
— Captain Lauth