The Alchemyst: The Secrets of the Immortal Nicholas Flamel by Michael Scott
The 14th century alchemist alchemyst Nicholas Flamel has the secret codex containing the recipe for the elixir of life hanging around his neck. For centuries, Dr. John Dee has been hunting for him because he wants that book. Dee has finally traced Flamel to his bookstore in 21st century California. He busts in, gets all but the last two pages of the book, and kidnaps Flamel’s wife. Now the world is in danger because Dee plans to bring the dark Elder gods to power and they will enslave humans.