Alchemist's Code

It is said the legendary Maestro Nostradamus is able to glimpse the ever-changing future, but even he cannot see the danger that is about to envelop him when he is hired to find a foreign spy by Venice’s ruling Council of Ten. Especially since the only clues are the spy’s intercepted messages, encoded in a seemingly unbreakable cipher.
 
But Nostradamus soon detects evil influences working against him, and realizes the spy can only be caught by occult means. He turns to his able apprentice, the daring young swordsman Alfeo Zeno, whose unique talents may prove essential to unraveling the truth. But the truth may be the end of both master and apprentice…

“One of the best writers in the fantasy world today.”—Writers Write