Description
It is the summer of 1940. The world is at war. These days, you don’t know who you can trust or who might be a secret spy…
Maths whizz Jakob Novis has been recruited to the secret codebreaking centre at Bletchley Park. As Jakob works to crack the Nazis' Enigma cipher, his younger sister Lizzie shows up. She is on an undercover mission of her own to find their mother.
Filled with codes to decipher and mysteries to unravel, this is the unputdownable historical adventure that will have you on the edge of your seats.
A thrilling middle grade historical adventure from bestselling authors Ruta Sepetys and Steve Sheinkin
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