
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.

as John Barrington

as Mrs. Barrington

as Helen Barrington (as Carla Lehman)

as Charles Dimble

as Flt·Lieut. Perry

as Ronald

as Alan Trently

as John Forest

as Miss Fernery

as Evans

as Mrs. Trimm

as Dr. Truscott

as Mrs. Stokes

as Lady Wrapping Parcels For The Bazaar (uncredited)

as Senior RAF Officer (uncredited)

as Scotland Yard Inspector (uncredited)

as German Agent (uncredited)

as Ministry Official (uncredited)

as Scottish Police Inspector (uncredited)

as German Agent (uncredited)

as RAF Officer (uncredited)

as Scottish Fisherman (uncredited)