J.O.C. Orton (Screenplay) · Anthony Asquith (Director) · Anatole de Grunwald (Screenplay)
Leslie Banks
John Barrington
Jeanne De Casalis
Mrs. Barrington
Carla Lehmann
Helen Barrington (as Carla Lehman)
Alastair Sim
Charles Dimble
John Mills
Flt·Lieut. Perry
George Cole
Ronald
Michael Wilding
Alan Trently
Frank Cellier
John Forest
Muriel Aked
Miss Fernery
Wally Patch
Evans
Muriel George
Mrs. Trimm
Hay Petrie
Dr. Truscott
Catherine Lacey
Mrs. Stokes
Annie Esmond
Lady Wrapping Parcels For The Bazaar (uncredited)
Peter Gawthorne
Senior RAF Officer (uncredited)
Arthur Hambling
Scotland Yard Inspector (uncredited)
Roddy Hughes
German Agent (uncredited)
Sydney King
Ministry Official (uncredited)
Brefni O'Rorke
Scottish Police Inspector (uncredited)
Charles Rolfe
German Agent (uncredited)
Sydney Tafler
RAF Officer (uncredited)
Ben Williams
Scottish Fisherman (uncredited)
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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.
