The Library Kids Mystery of the Blue Mounds

Katie O’Conner doesn’t realize that her habit of questioning everything annoys adults. But when Katie finds a secret library, along with her three friends and little brother, she finally finds some answers to her questions. The problem is that seven evil Enemies of the Library and their Dark Master are trying to take over the world. Can Katie, her friends, her brother and the Library’s caretaker, defeat them?
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