A British secret service agent and his sister travel to Berlin to recover a top secret RAF invention which was stolen from the French government.
Cast

Basil Radford
John Richardson
Sylvie St. Clair
Helen Richardson

Thorley Walters
Max Von Reimer

Peter Gawthorne
General Kurt Von Reimer

Tom Helmore
Captain Benoit

Joss Ambler
Colonel Blondin

George Hayes
Inspector Welter
Kiwi
Richardson's dog

Manning Whiley
Unknown
Victor Gammon
Unknown
Wilson Coleman
Unknown
Sidney Monckton
Unknown
Ingram Denyer
Unknown

Megs Jenkins
Berta Von Reimer
C. Denier Warren
Waiter
Crew
John Baxter
Director
Michael Hogan
Screenplay
Charles Robert-Dumas
Story
Cecil H. Williamson
Editor
James Wilson
Director of Photography
Bob Jones
Assistant Director
John Corfield
Producer
F. McNally
Sound Recordist
Kennedy Russell
Music
Barbara K. Emary
Continuity
Fred A. Swan
Production Manager
Duncan Sutherland
Art Direction