Books like Alvin's Secret Code by Clifford B. Hicks
In this junior‑detective tale, twelve‑year‑old Alvin teams up with his best friend Shoie to unravel a mysterious puzzle. Their knowledge of codes and ciphers leads them into a dangerous adventure that challenges their wits and the strength of their friendship. As they decode clues and follow the trail, the duo learns valuable life lessons while battling hidden dangers.
First publish date: 1963
Genre: Children's Fiction/Children's Adventure
Authors: Clifford B. Hicks
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