Frederick Jaeger

as Jano (voice)

as Doctor Adolph Müdel

as Fritz Stiefel

as Millburn

as Major Selwyn Davis

as World War One Ace

as Colonel Melchett

as Edvard Jensen

as Self

as Various

as Douglas Smedley

as Gabriel Astruc

as Kurt Langsdorf

as Keith Sayle

as Inspector Klingmann

as German Major (uncredited)

as Inspector Grant

as Major Robert Wheeler

as Schuman

as Professor Marius

as Werner Mannheim

as Marker

as Jones

as Sorenson

as Goldman

as Caradoc

as Holstein

as Keith Sayle

as Douglas Smedley

as Novins

as Bergen

as Joachim

as Klaus

as Wilkinson

as Luther

as Melchior

as Henrik Ibsen

as Richard Massingham

as Pilot

as Major Harwood

as Peter Jarratt

as Sir Adam

as Jano

as Tostig

as Walter

as Sorenson

as Professor Marius

as Male Receptionist

as Forsch

as Vicary

as Benson

as Bernarde

as Johann

as Junior German Officer

as 2nd German Officer

as German Prisoner

as Sir Christopher

as Koch

as Bequeville

as John Charles Walton