Deep within the Library of Doom, raiders are searching for the treasure of the Lost Archives. The thieves have captured a young worker to guide them through the mazelike shelves. The boy doesn't want to betray the Librarian, but he is a Silent One. If he cannot speak, how can he call for help? Uncover hidden dangers and dark mysteries with SECRETS OF THE LIBRARY OF DOOM, a page-turning chapter book series from bestselling author Michael Dahl.