as Henderson
as Bagley
as Chalmers
as Mr. Lang, government agent
as Capt. Samuel Murdock
as Capt. Strong
as Gavin Gore
as Melling
as Col. Crawson
as Maj. Lee - Doctor (uncredited)
as Physician (uncredited)
as Editor Richard Daniels
as Herbert Evans
as BBC Radio Announcer (voice) (uncredited)
as Prentiss Johns
