When the mysterious society of the Nine Unknowns decides to search for the last of the nine books supposed to contain all human knowledge, Alex, a professor of History of Civilization at Harvard, and Mary, head of her private security agency, have no idea that it will be the most dangerous of their quests, and that they will have to face a great enemy.
From the monastery of Gyantse in Tibet to Les Invalides in Paris, through Argentina and the United States, they will pursue the traces of a book for which people are ready to kill. For the power of this object may be even greater and more terrible than they imagined.
Alexandre Murat is a direct descendant of Marshal Murat, Prince of the Empire, King of Naples and Napoleon's brother-in-law (he married his sister, Caroline Bonaparte). Passionate about history, he is interested in lost civilizations, and in the history of the First Empire since he was a child.