as George Hazelhurst
as Clarence Hyle
as Harlan Carr
as Professor Nichols (uncredited)
as Col. Hendricks (uncredited)
as Forbes
as Joeffrey Vandermuellen
as Colonel Rathbone
as Lieutenant Ober
as Blais
as Alec Langley
as Crown Prince of Germany
as Norton (uncredited)
as The Brother
as Professor Fullerton
as Narraboth, Captain of the Guard
as Robert Busch / Crown Prince
as Emperor Maximilian - Prologue
as George Pratt
as Commissionnaire Desmard
as Emanuel Müller
as Robert Haskell
as Alexander Vernon
as Lionel Brooks
