Excellent esoteric thriller, as is often the works of Giacometti and Ravenna, which we walk from one chapter of the Middle Ages in the XXI century on the track of Nicolas Flamel, alchemist of his state, and Antoine Marcas Commissioner Freemason ... This back and forth is very fashionable in such novels apparently !! The plot is of course somewhat preposterous, the twists are linked impeccably and loopholes still occur aptly, that's the magic of fiction and that's good for the protagonists! but this new adventure reads with great pleasure and curiosity, and the book does not fall from the hands. Scant information on Freemasonry throughout the novel have the curious advantage to anchor the fiction some reality ... and this confusion of genres gives it something quite breathtaking in harmony with the surprising outcome of this survey ... A bit long perhaps, but definitely addictive.