The Six Unsolved Ciphers: Inside the Mysterious Codes That Have Confounded the World's Greatest Cryptographers

6 FASCINATING STORIES, 6 MYSTERIOUS CODESFollow the horrific crimes of the ZODIAC and see the symbol-filled letters he sent to local San Francisco newspapers. Could breaking his code lead to the arrest of this still-at-large serial killer?Learn how the Declaration of Independence was used to decode part of the BEALE PAPERS. Find the decoder key for the rest of its cipher and a $30 million buried treasure awaits you somewhere in Buford County, Virginia. See how one man directly challenged the CIA by erecting an encoded sculpture called KRYPTOS at the agency’s Langley headquarters―only to prove that his genius could resist the world’s best code-breakers and most powerful decryption software.Plus three more captivating ciphers . . .