The Bletchley Riddle

NEW YORK TIMES BESTSELLER • A thrilling mystery and collaboration between award-winning and bestselling authors Ruta Sepetys and Steve Sheinkin! This historical adventure follows two siblings at Bletchley Park, the home of WWII codebreakers, as they try to unravel a mystery surrounding their mother’s disappearance. "Break out your Enigma machines! Sepetys and Sheinkin have written a thrilling World War II code-breaking adventure filled with ciphers, secrets, and spies."—Alan Gratz, New York Time