Interest LevelReading LevelReading A-ZATOSWord Count
Grades 4 - 8Grades 3 - 5T4.547493
Charlie and the Chocolate Factory meets A Night in the Museum in this action-packed New York Times Bestseller from Chris Grabenstein, coauthor of I Funny, Treasure Hunters and other bestselling series with James Patterson!

Kyle Keeley is the class clown and a huge fan of all games—board games, word games, and particularly video games. His hero, Luigi Lemoncello, the most notorious and creative gamemaker in the world, just so happens to be the genius behind the construction of the new town library. Lucky Kyle wins a coveted spot as one of twelve kids invited for an overnight sleepover in the library, hosted by Mr. Lemoncello and riddled with lots and lots of games. But when morning comes, the doors stay locked. Kyle and the other kids must solve every clue and figure out every secret puzzle to find the hidden escape route!

Don't miss the next puzzle-packed adventure—Mr. Lemoncello's Library Olympics—coming in January 2016!

"Discover the coolest library in the world." —James Patterson, #1 New York Timesbestselling author


Starred Review, Booklist

* “An ode to libraries and literature that is a worthy successor to the original madman puzzle-master himself, Willy Wonka.”

Starred Review, Kirkus Reviews

*"Full of puzzles to think about, puns to groan at . . . this solid, tightly plotted read is a winner for readers and game-players alike."
Hardcover, 304 pages
Published on June 25, 2013 by Random House Books for Young Readers
ISBN-10: 037587089X
ISBN-13: 9780375870897
218 Book Reviews
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  • singing_sloth
    singing_slothWednesday, April 10, 2019 at 4:38 pm55 stars
    I LOVED THIS BOOK!! It test your mind while reading and having fun with the characters! It makes you feel like your trying to escape from the library too!
    • lunalovegood8
      lunalovegood8Sunday, April 7, 2019 at 5:22 pm55 stars
      It was a really fun book!
      • jilly_bean
        jilly_beanThursday, February 28, 2019 at 4:09 am55 stars
        This book is practically impossible to put down! The characters are so charming and witty! It was never really Chris Grabenstien telling the story, it was always Mr. Lemoncello.
        • lightninggirl
          lightninggirlTuesday, January 29, 2019 at 10:07 am55 stars
          Love it!!! I read this in fifth grade and the author actually came to my school!
          • sasscat
            sasscatSunday, January 27, 2019 at 12:30 am55 stars
            100% imagination 😁!!!
            • Travis JrThursday, January 17, 2019 at 7:45 am
              5 Stars!!!!!
              • Travis JrThursday, January 17, 2019 at 7:45 am
                I love the book so much i cant stop reading it!
                • Cool dudeWednesday, December 26, 2018 at 6:16 pm
                  the library in the book was awesome
                  • Cool dudeWednesday, December 26, 2018 at 6:14 pm
                    Fun book
                    • hello!!Tuesday, December 11, 2018 at 3:00 pm
                      love it