Britain's secret service, MI6, has lost contact with its informant in northern Italy, just as important intel about the future plans of Austria and Nazi Germany is coming to light. To her surprise, Elena Standish is the only one who can recognize MI6's man-- because he's her former lover, Aiden Strother. Elena heads to Trieste to track down Aiden and hears word of a secret group working to put Austria in the hands of Germany. Meanwhile, Elena's sister, Margot, is in Berlin to watch her childhood friend get married-- to a member of the Gestapo.