Spies and secret codes await in Asha and Baz’s latest adventure! In the third book of the Asha and Baz series, readers travel to the past to learn about codebreaking during Word War II! When Asha and Baz get stuck on a codebreaking challenge at school, they travel to 1942 to find help. Codebreaker Elizebeth Friedman seems like just the person for the job—but first, the kids must help her decode some secret messages from Nazi spies!