Nicholas Flamel appeared in J.K. Rowling’s Harry Potter—but did you know he really lived? And his secrets aren't safe! Discover the truth in book two of the New York Times bestselling series the Secrets of the Immortal Nicholas Flamel. The Enemies: Dr. John Dee and Niccolo Machiavelli. Their Plan: Steal the rest of what Nicholas Flamel has fought to protect.    John Dee has the Book of Abraham the Mage, which means the world is on the brink of ruin. Except he's missing two c