These aren't just ordinary mystery books, these are books that use different ciphers and codes such as the substitution cipher, the Baconian cipher, cipher texts, the Ogham alphabet, binary codes, Pigpen, the scytale cipher and many more...to solve a mystery.
16 books ·
2 voters ·
list created June 14th, 2023
by plumcrazybooks (votes) .
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Capn
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Feb 17, 2024 04:37AM
Love it - excellent list!!!
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