Noel Willman

as Bruno Merk

as Mr Justice Bates

as Father Nassau

as Franz Bayer

as Holvera

as Sir Walter Sloane

as Theopolos

as Sir Hugh Anderson

as Sir Hugh Alexander

as Magistrate

as Aramis

as Za-Tor

as Dr. Franklyn

as Razin, Liberius' Lieutenant

as Dr. Ravna

as Webster

as Johnson

as Prison Governor

as Colonel Rodriguez

as Inspector Thomas

as Nigel Pickering

as The Lawyer

as Interrogator

as Chief of Police

as Aubrey Clark

as Dr. Clifford Preston

as Woburn

as Du Guesclin

as Lord Byron

as Hobley

as Dr. Dennis Bord

as Spintho

as Mr. Perker