A different approach to the WW2 era. Nathan and his family have moved into a house his family inherited from his Great Aunt (who lived there during WW2). In the house are clues to a mystery involving the Enigma Code. When Nathan’s Dad gets arrested for breaking the Official Secrets Act, it is up to Nathan to solve the mystery and clear his Dad. This was an enjoyable mystery/adventure that kept me intrigued. Not challenging but well written. Suitable for Year 7-8.