The famous detective and his trusty side-kick, Tinker, are called in by the War Office to find some important papers that were stolen from a man killed during an air raid.
David Farrar
as Sexton Blake
Manning Whiley
as Raoul Sudd
Dennis Arundell
as Johann Sudd
John Varley
as Tinker
Betty Huntley-Wright
as Nobby
Gordon McLeod
as Inspector Venner
Kathleen Harrison
as Mrs. Bardell
Cyril Smith
as Belford
Magda Kun
as Yvonne
Ferdy Mayne
as Slant-Eyes
Charles Farrell
as Skipper
Roddy Hughes
as Ferraby
