as Mr. Dubbin
as Nyder (archive recording)
as Stephen Kedge
as Professor Whittaker
as Nyder
as Dr. Lawrence
as Doctor
as Mr. Reise
as BBC Executive
as Major General Oster
as Arranches
as Professor Whitaker
as Dr. Whatmore
as Bradshaw
as Secretary Rontane
as Registrar
as Harry Gold
as Arthur Wainright
