Unraveling the Zodiac Ciphers and Codes takes the reader on a historical trek through the Zodiac letters and ciphers associated with the Zodiac murders in the 1960s. A systematic approach uncovers the messages hidden not only in the four Zodiac ciphers but, in each of the Zodiac's letters as well, including some that have never been broken. The decrypted and unraveled ciphers reveal the identity of the people involved in the Zodiac case--including BOTH of the killers--their motivation for committing their crimes, the connection to the sinking of the Titanic, and the precise location of the death machine bomb.