Age Group: 9 - 12 Years, 12+ Years

Description: Shortlisted for the 2025 Young Quills Historical Fiction Award—from two award-winning masters. Summer 1940: As Nazi bombers darken British skies, riddle-loving siblings Jakob (19) and quirky Lizzie (14) Novis plunge into Bletchley's top-secret codebreaking heart. Bound by the Official Secrets Act, maths genius Jakob joins elite minds assaulting Hitler's unbreakable Enigma cipher—while Lizzie defies exile to America, chasing their mother's eerie Warsaw embassy vanishing amid Blitz shadows. Cryptic doorstep codes multiply as a sinister inspector prowls the gates. Trap or truth? Could Enigma's riddles entwine with Mum's fate? Quarrelsome but brilliant, the Novis duo must unite—deciphering perils from Luftwaffe raids to lurking spies—in this unputdownable WWII rush. "Thrilling ciphers and secrets" (Alan Gratz)—pure edge-of-seat history!