Castle Falkenstein: The Lost Notebooks of Leonardo da Vinci
People will kill for them. Wizards will sell their souls for them. Wars have been fought for them. Kingdoms will topple should they fall into the wrong hands. What are they? They're the tomes everyone in New Europa wants to get their hands on! Based on the writings of Aristotle, written by Leonardo da Vinci, and ordered destroyed by the Pope, this secret codex has been lost for centuries. Brought from beyond the Faerie Veil, the secrets contained inside this tome can change the face of the World!