In an aging mansion on the north side of London's Putney Bridge, an old woman confesses a secret to her grandson, just returned home from the battlefields of World War II. Charlotte Stetchworth has always appeared to be a proper Englishwoman, though with a lively background as a suffragette and European traveler. Now, her grandson Freddy learns a sinister secret, that Charlotte and her son Rolly-Freddy's father-were involved in a complex web of spying...