The Great Impostor

Tony Curtis

Ferdinand Waldo Demara Jr. / Martin Donner / Dr. Gilbert / Ben. W. Stone / Dr. Joseph Mornay / Robert Boyd Hammnd

Karl Malden

Father Devlin

Edmond O'Brien

Capt. Glover - HMCS Cayuga

Arthur O'Connell

Warden J.B. Chandler

Gary Merrill

Pa Demara