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THE CONCLUSION TO THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD! Welcome back to what James Patterson calls “the coolest library in the world.” Follow along and solve the clues in this interactive adventure to see if you have what it takes to be the new owner of Mr. Lemoncello’s epic gaming empire! From the co-author of Murdle Jr.: Sleuths on the Loose… “A worthy successor to the original madman puzzle-master himself, Willy Wonka.” —Booklist, starred review of Escape from Mr. Lemoncello’s Library Mr. Lemoncello has invited thirteen lucky thirteen-year-olds—including his biggest fan, Kyle Keeley—to compete in one last fantabulous challenge. This time everything is on the line… literally! The winner of these games will become the new owner of Mr. Lemoncello’s entire empire. But uh-oh—someone is trying to destroy Mr. Lemoncello and all he stands for: imagination, games, books, and knowledge. Can Kyle stop them and make his dreams come tr