The Knights of CrystalliaAlcatraz vs. the Evil Librarians seriesNew York Times
In this third Alcatraz adventure, Alcatraz Smedry has made it to the Free Kingdoms at last. Unfortunately, so have the evil Librarians--including his mother! Now Alcatraz has to find a traitor among the Knights of Crystallia, make up with his estranged father, and save one of the last bastions of the Free Kingdoms from the Evil Librarians.