I See A Dark Stranger

Bridie is a strong-minded Irish girl who decides on her 21st birthday that she will take the train to Dublin where she will help in the war against the British. On the train she meets Miller, a Nazi officer attempting to rescue an accomplice. He sees that she is an attractive decoy so takes her to England with him. When Miller and his rescuee are killed, Bridie is told that a notebook containing plans for the Allies invasion is on the Isle of Wight. She sets off to find and destroy it but there are many other parties interested in its whereabouts...