Thrillers - Codes and Ciphers

Try these International Thrillers that all have to do with codes and ciphers:

The Venona Cable : a thriller by Brent Ghelfi
"Russian agent and criminal Alexei Volkovoy pays an action-packed visit to theU.S. to uncover secrets of the infamous Venona cables and to attempt to clear his family name."
Nemesis by Bill Napier
The "secret to saving the world is hidden in a 17th Latin century manuscript that has gone mysteriously missing."
The Book of Fate by Brad Meltzer
Trying to figure out what really happened during a failed assassination on the Chief Executive takes an ex-presidential aide back to a decade-old presidential crossword puzzle, mysterious facts buried in Masonic history, and a two-hundred-year-old code invented by Thomas Jefferson.
The Alexander Cipher by Will Adams
"Daniel Knox's first love is archaeology, more specifically Alexander the Great. In this adventure, he competes with rival archaeologists, Egyptian officials, and Macedonian nationalists in the hunt for one of the greatest archaeological prizes in the world."