Crack secret codes, solve ciphers, and decode hidden messages with this thrilling detective puzzle workbook! Featuring alphabet-number codes, symbol decoding, missing letters, Caesar ciphers, Atbash ciphers, math-to-letter puzzles, hidden phrases, an ultimate final challenge, a complete answer key, and an official detective certificate on the final page. Designed with progressive difficulty levels for young code breakers and no animals, humans, or violent content.
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£1.75