Mysterious messages: a history of codes and ciphers

Clay, wax and Greece

The rise and fall of Rome

Ham and Bacon

A disk, a grille and a tableau

Babington, beer and Baconian biliteralisim

Prisons, pigpens and black chambers

The two revolutions

Security suffers some severe setbacks

The blue and the gray (and the green and the brown)

Agony, dancing men and buried treasure

The manuscript, the machine and the Mexican message

Romance, rum and Romaji

Hounds, magicians and indians

Bookies, spies and POWs

Colossus, Lucifer and Kryptos.