A good magician is a keeper of secrets. Secrets are at the base of magic: it is only because the magician knows the secrets behind his tricks that he can fool you. A good magic trick contains many different layers of secrets: there may be the mechanical secret that operates a box; the hidden sleight of nimble fingers that causes cards to fly from the pack; the psychological secrets that cause the audience to look in a different place just when the “secret” maneuver happens. All these elements must be coordinated to ensure the magic trick is successful.
Magicians are not the only keepers of secrets: since antiquity the practice to hide information of knowledge from another party has been used by governments, groups of people and individual to both protect themselves and to get some kind of advantage over another party. Espionage is documented to ancient civilizations and what is not often known is that some spies had a public or, more often, private attraction to the Art of Magic. I have already mentioned Hieronimo Scoto as a spy for the Duke of Parma in the European courts of the XVI century, but only recently I acquired an unknown magic manuscript of a modern spy…