This thrilling mystery follows the story of the Beale Ciphers, a series of three ciphertexts that have been unsolved since they were first discovered in 1885. The ciphers contain a mysterious set of instructions that, if deciphered, could lead to the discovery of a
From Wikipedia
The Beale ciphers are a set of three ciphertexts, one of which allegedly states the location of a buried treasure of gold, silver and jewels estimated to be worth over $60 million as of January 2025. Comprising three ciphertexts, the first (unsolved) text describes the location, the second (solved) ciphertext accounts the content of the treasure, and the third (unsolved) lists the names of the treasure's owners and their next of kin.