The Bletchley Riddle by Ruta Sepetys and Steve Sheinkin. Published by Viking, 2024.
The Bletchley Riddle is a fast-paced World War II spy novel that kids who enjoy codes and riddles will love. Bletchley Park was a secret installation about 50 miles northwest of London where some of the best minds broke German codes. The estate housed the Government Code and Cypher School. The code-breaking teams were 75% women, many of which were teenage girls. That much is true. The authors have woven the truth about Bletchley into a suspenseful middle grade/young adult novel.
The story begins with a short first-person narration from Jakob, age 19. He starts by saying, “First, a riddle” It’s a riddle about a spy who hides his secret on his head. When he gets to his contact he asks him for a knife and shaves off his hair, and the code, or information, is written there. “Of course, the more cunningly the secrets are hidden, the harder people like me will work to find them,” Jakob says.
The second chapter we hear from Lissie, Jakob’s fourteen-year-old sister, who also loves riddles. She’s about to get on a ship to America to live with her aunt for the duration of the war, but she has a plan to escape the ship and try to find her brother. He has disappeared from her life, and she wants to know why.
After successfully tricking her guardian (Jakob’s and Lizzie’s parents are dead) she goes on a quest to try and figure out why her brother hasn’t answered any of her letters. He’s only given her a mysterious London address to write to him, but when she finds it, she is immediately taken to an office where a terribly grumpy man questions her and suddenly brings Jakob into the room. At first elated to see her brother, she is furious with him because he still refuses to tell her what he is doing. The grumpy man decides she must be taken to Bletchley to keep her from talking about her brother and his job—not that she knows anything about it. Once there, she is given the job of messenger. In this capacity she eventually figures out some of what’s going on at the Park, although, because everyone working there has signed the Official Secrets Act, people who work in different capacities cannot discuss what they are doing. If they do, they could be shot for treason. Jakob has already signed it, and when Lizzie is told she must sign it as well, she worries because she is terrible at keeping secrets.
Without giving anything away, suffice it to say, Lizzie is just as brilliant as her brother and together they are part of a fleet of young people who finally crack the German codes and helped win WWII.
There are photographs of Bletchley Park and its strange machines, all of which was declassified in the 1970s. Lots of back matter about what people did there and how they saved the world. It’s a great read.
The Enigma Girls, How Ten Teenagers Broke Ciphers, Kept Secrets, and Helped Win World War II, by Candace Fleming. Scholastic Focus, 2024.
The Enigma Girls is the perfect non-fiction companion to The Bletchley Riddle. It’s the true story told by ten women in their own voices. When the secret of Bletchley Park was declassified in the 1970s, the women who had been teenagers when they signed up to do war work, told their stories.
When their brothers and fathers went off to war, many girls wanted to serve their country as well. The first example, and one of the most interesting, is Jane Hughes. She wanted to do something for her country. “But how? Could she work in a munitions factory…Could she learn to drive an ambulance? Thousands of British girls were signing on to do essential war work. Jane longed to join them.”
Her parents, Lord and Lady Hughes strongly objected. Jane was supposed to “come out” to society in a few weeks, a Debutant ball in no less than Buckingham palace. She would meet the King and Queen. This was a ritual that went back many generations. The “Season”, as it was called was supposed to launch a young girl into the adult world—and find her a husband. “…Jane wanted none of it—not the dancing, nor the Queen. Most of all, she did not want the husband.”
What saved Jane was a letter from a friend who was working somewhere in the small town of Bletchley. She didn’t say much but invited her to come and work there. Intrigued, Jane was soon on a train to Bletchley. Elizabeth met her at the gate to the Park, so the guards could let her in. But Elizabeth would say nothing about the work there. After giving Jane a very serious talk about never telling anyone what she did there or its location, the Commander pulled out a piece of paper. It was the Official Secrets Act. She had to sign it. He told her if she shared any information about Bletchley or what she was working on—even to others working in other departments—she would be committing treason. He finished with this comment: “’If you did,’ he added, “you would be liable to the most extreme penalties of the law…I’m not sure whether, at this moment, that’s hanging or shooting by firing squad.’” Jane signed it.
So did the other nine girls profiled in the book. None of them ever broke their silence, until the work at Bletchley Park was de-classified. This book is just as intriguing and fast-paced as the novel. If you’re not into history, I suggest you read the novel first. That should pique your interest in this book.
For adult readers who want to delve into a novel about Bletchley, The Rose Code, by Kate Quinn is excellent reading.





The Last Mapmaker by Christina Soontornvat. Candlewick Press, MA, 2022.





