This activity book includes a code-breaking section for secret messages.
Heart of Barkness (A Chet & Bernie Mystery) – Hardcover By Quinn, Spencer – GOOD
A nice touch in this activity book is the tips for solving each puzzle type.
A Fistful of Collars: A Chet and Bernie Mystery (The Chet and Bernie – VERY GOOD
A nice touch in this activity book is the tear-out pages for easy sharing.