England, at the start of World War Two. Mysterious wireless broadcasts, apparently from Nazi Germany are heard over the BBC. They warn of acts of terror in England, just before they take place. Baffled, the Defense Committee call in Sherlock Holmes.
Newspaper reporter "Scoops" is sent out on assignment, to investigate the failed assassination attempts on Archduke Julio. Trying to get the story, he runs into Jane Hamilton who is really Princess Helen. He doesn't realize that she is the story: a princess in exile, in danger of assassination;...
