David Swift

as Montclair

as Troufiat

as Richard Rees

as Det. Supt. David Gosling

as Daladier

as Gadsden

as Henry Davenport

as Joe Morris

as Harold McEwan

as Chester Drake

as Insp. Havelock

as Henry Reedburn

as Councillor Bass

as Nikolai Vavilov

as Dr. Barnard

as Sir Kenneth

as Sir Marcus Cohen

as Henry Davenport

as Max Wartbug

as Euphrates

as Sergeant Oxley

as Waldemar