On his very first assignment as a civil defense messenger in World War II London, Bertie Bradshaw finds the diary of a spy lying in the street. He eagerly reads about the young spy’s training and how she parachuted into France to assume her new covert role. Things soon begin to sound dangerous as one by one her fellow agents are captured by the Nazis. Then the diary suddenly changes into code.
Bertie decides to trust a gutsy American girl, Eleanor, and his best friend David, who is Jewish, with the secrets in the diary. In a race against time, they must try to decode the final messages and then track down not only the spy who wrote them but also the traitor who is leaking information to the Nazis - information so vital that it will affect the success of the invasion of France and the lives of countless allied agents.
I immediately felt affinity for Bertie because he is a believable thirteen-year-old, forgetting his helmet and his training at first but then gaining courage and confidence as the story progresses. Bertie is also struggling with what seem to be panic attacks, stemming from the bombing of his house and the separation of his family, which makes his determination all the more admirable. I also enjoyed Little Roo, Bertie’s trained rescue dog, who has more to do with the success or failure of the venture than you might think.