Londoner Harry Fabian is a second-rate con man looking for an angle. After years of putting up with Harry's schemes, his girlfriend, Mary, becomes fed up when he taps her for yet another loan.
In the midst of Nazi air raids, a postman dies on the operating table at a rural hospital. But was the death accidental?
Proud Irishwoman Bridie Quilty journeys to Dublin while World War II rages across Europe. During her travels, she encounters J. Miller, who recruits her as a Nazi spy. She acquires the necessary information that leads to the breakout of a German spy who holds key information about the Allies' newest offensive plans. However, the arrival of British officer David Baynes and his romancing of Bridie lead to unexpected consequences.
