"A worthy successor to the original madman puzzle-master himself, Willy Wonka." --Booklist, starred review

When Kyle Keeley learns that the world's most famous game maker, Luigi Lemoncello, has designed the town's new library and is having an invitation-only lock-in on opening night, he's determined to be there! But the tricky part isn't getting into the library--it's getting out. Because when morning comes, the doors stay locked. Kyle and the other kids must catch every clue and solve every puzzle to find the hidden escape route!

Enjoy bonus content in the back--extra puzzles, an author Q&A, and more!

The Lemoncello books are laugh-out-loud, puzzle-packed must-reads for classrooms and homes across America. Look for the whole series!
Mr. Lemoncello's Very First Game (the prequel)
Escape from Mr. Lemoncello's Library (also available as a graphic novel)
Mr. Lemoncello's Library Olympics (also coming soon as a graphic novel)
Mr. Lemoncello's Great Library Race
Mr. Lemoncello's All-Star Breakout Game
Mr. Lemoncello and the Titanium Ticket
Mr. Lemoncello's Fantabulous Finale