"In the third book in the Asha and Baz series, readers learn about secret codes and how to break them from World War II codebreaker Elizebeth Friedman! A secret code and a mysterious prize up for grabs at school prompts Asha and Baz to once more use their magic stick to travel to the past. This time they land in 1942, where they meet Elizebeth Friedman, a codebreaker working with the US Navy. She's the perfect person to help the kids with their codebreaking challenge, but she's hard at work decoding secret messages from Nazi spies! With a navy officer pressuring Elizebeth to work quickly and the Allied war efforts at risk, the kids could be in for more than they expected in Asha and Baz Meet Elizebeth Friedman!"--Publisher's website.