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The Wing Warriors work for the Library of Doom, circling the world in a floating fortress as they search for dangerous books. But, when a new book is brought aboard, monsters come flying after it. Can the Warriors and the mighty Librarian keep the gargoyle horde from getting their claws on the book's deadly pages? Uncover hidden dangers and dark mysteries with Secrets of the Library of Doom, a page-turning chapter book series from bestselling author Michael Dahl.