A blind Englishwoman weds a French nobleman and moves into his family's chateau, but she quickly realizes someone there wants her out of the way.

Jim Ackland, who suffers from a head injury sustained in a bus crash, is the chief suspect in a murder hunt, when a girl that he has just met is found dead on the local common, and he has no alibi for the time she was killed.

In the midst of Nazi air raids, a postman dies on the operating table at a rural hospital. But was the death accidental?

Determined, independent Bridie Quilty comes of age in 1944 Ireland thinking all Englishmen are devils. Her desire to join the IRA meets no encouragement, but a German spy finds her easy to recruit. We next find her working in a pub near a British military prison, using her sex appeal in the service of the enemy. But chance puts a really vital secret into her hands, leading to a chase involving Bridie, a British officer who's fallen for her, a German agent unknown to them both, and the police...paralleled by Bridie's own internal conflicts.