Cottage to Let is a 1941 spy film starring Leslie Banks, Alastair Sim and John Mills. Set in World War II Scotland, its plot concerns Nazi spies trying to kidnap an inventor.
Upper-class Mrs. Barrington (Jeanne De Casalis) takes in two child evacuees from London, including cocky teenager Ronald (George Cole), lodging them in a cottage she owns. However, it has already been let to annoyingly inquisitive Charles Dimble (Alastair Sim). To compound the confusion, Mrs. Barrington had also agreed to allow it to be converted into a military hospital. Spitfire pilot Flight Lieutenant Perry (John Mills) parachutes into the nearby loch and becomes the first patient, tended by Mrs. Barrington's pretty daughter Helen (Carla Lehmann). Mrs. Barrington relocates Ronald to the main house, while Dimble and Perry remain in the cottage.
Ronald makes friends with Mrs. Barrington's husband John (Leslie Banks), a brilliant but eccentric inventor, currently working on a bombsight for the Royal Air Force. However, he insists on working on his own. His assistant, Alan Trently (Michael Wilding), becomes jealous when Helen starts spending too much time with Perry. Eventually though, Helen lets Trently know