Allied spies and Nazi Agents insinuate themselves at a Scottish cottage (converted to a wartime hospital) with interests on an inventor's nearly perfected bomb sight.
John Barrington
Mrs. Barrington
Helen Barrington (as Carla Lehman)
Charles Dimble
Flt·Lieut. Perry
Ronald
Alan Trently
John Forest
Miss Fernery
Evans
Mrs. Trimm
Dr. Truscott
Mrs. Stokes
Lady Wrapping Parcels For The Bazaar (uncredited)
Senior RAF Officer (uncredited)
Scotland Yard Inspector (uncredited)
German Agent (uncredited)
Ministry Official (uncredited)
Scottish Police Inspector (uncredited)
German Agent (uncredited)
RAF Officer (uncredited)
Scottish Fisherman (uncredited)
