Nearly two years ago, Meg Kenyon's father left their home in France to fight for the Allies in World War II. Recently Meg heard he had been taken prisoner by the Nazis. All Meg has left of him now are the codes he placed in a jar for her to decipher, an affectionate game the two of them once shared. But even those are running low. Suddenly, an impossible chance to save her father falls into Meg's lap when she finds an injured British spy hiding in...