José Ferrer

as Captain Alfred Dreyfus

Anton Walbrook

as Maj. Esterhazy

Viveca Lindfors

as Lucie Dreyfus

Leo Genn

as Maj. Picquart

Emlyn Williams

as Emile Zola

David Farrar

as Mathieu Dreyfus

Donald Wolfit

as Gen. Mercier

Herbert Lom

as Maj. DuPaty de Clam

Harry Andrews

as Maj. Henry

Felix Aylmer

as Edgar Demange

Peter Illing

as Georges Clemenceau

George Coulouris

as Colonel Sandherr

Carl Jaffe

as Colonel Maximilian von Schwarzkoppen

Eric Pohlmann

as Bertillon

John Chandos

as Drumont

Ernest Clark

as Prosecutor at First Dreyfus Trial

Anthony Ireland

as Judge at First Dreyfus Trial

John Phillips

as Prosecutor at Esterhazy Trial

Laurence Naismith

as Judge at Esterhazy Trial

Michael Hordern

as Prosecutor at Second Dreyfus Trial

Keith Pyott

as Judge at Second Dreyfus Trial

Ronald Howard

as Captain Avril

Charles Gray

as Captain Brossard

Arthur Howard

as Captain Lauth

Michael Trubshawe

as English Publisher

Violet Gould

as Old Woman

Malcolm Keen

as President of France

Rachel Lemkov

as Captain Dreyfus' Daughter