Charlie and the Chocolate Factory meets A Night in the Museum in this the action-packed New York Times bestseller from Chris Grabenstein, coauthor of I Funny and other bestselling series with James Patterson!

Kyle Keeley is a huge fan of all games - board games, word games, and particularly video games. His hero, Luigi Lemoncello, the most famous and creative gamemaker in the world, is the genius behind the town's new library that is as much a home for tech and trickery as it is for stories. Kyle wins a spot at a puzzle-packed lock-in on the library's opening night. But when morning comes, the doors stay locked. Kyle and the other kids must solve every clue and figure out every secret riddle to find the hidden escape route . . . !

Full of puzzles to think about, puns to groan at and references to children's book titles, this solid, tightly plotted read is a winner for readers and game-players alike * Kirkus *
An ode to libraries and literature that is a worthy successor to the original madman puzzle-master himself, Willy Wonka * Booklist *
A marvel * Publishers Weekly *

CHRIS GRABENSTEIN is the #1 New York Times bestselling author of many books, as well as the co-author of numerous fun and funny page-turners for young readers with James Patterson. Chris lives in New York City with his wife, J.J., two cats, and a dog named Fred.