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Mr. Lemoncello’s Library

Chris Grabenstein and Douglas Holgate
Mr. Lemoncello's Fantabulous Finale by Chris Grabenstein
Available on (09-16-25)

Mr. Lemoncello’s Fantabulous Finale

Book 6
Paperback $8.99

Mr. Lemoncello’s Library : Titles in Order

Book 6
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 true?

Get ready for a whirlwind adventure from the lions of the New York City Public Library to the Choose Your Own Thrill-Venture Roller Coaster inside the brand-new Lemoncelloland amusement park, filled with codes, clues, and surprise cameos. So sit back and relax… you are on your way to Lemoncelloland!

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
Book 5
THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD!

James Patterson called it “the coolest library in the world.” Now follow along and solve the clues in this interactive adventure through Mr. Lemoncello’s one-of-a-kind, never-before-seen Gameworks Factory! 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

Far away from his magical library, everyone’s favorite game maker, Luigi Lemoncello, is building something new. Something secret. And he’s about to let the world see it. Four lucky kids will win the chance to go inside the new Lemoncello-tastic building on a scavenger hunt that will take them through live-action challenges: skyscraper-size Jenga, dizzying real-life Chutes and Ladders, death-defying games of Rush Hour, and more! Each game will get the players closer to the titanium ticket. And only then will the real secret be revealed…

Don’t miss the bonus puzzle in the back!

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
Book 4
THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD!

And we’re live! From what James Patterson calls “the coolest library in the world” to Mr. Lemoncello’s first-ever televised breakout game, follow along and solve the clues in this interactive adventure! By 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 is leaving the library and going live across the nation with his latest game. Kyle Keeley can’t wait to audition, but only a lucky few will get to compete in front of millions of viewers in a completely immersive new breakout game—with real kids as the playing pieces! Nothing is ever as it seems with Mr. Lemoncello, and the clock is ticking. Can Kyle and his friends crack the codes in time to win it all?

Don’t miss the bonus puzzle in the back!

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
Book 3
THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD!

On your marks. Get set. Read! From what James Patterson calls “the coolest library in the world” to the race of a lifetime, follow along and solve the clues in this interactive adventure! By 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

Everyone’s favorite game maker, Mr. Lemoncello, is testing out his new fabulous fact-finding frenzy game. Kyle Keeley and the other lucky finalists will go on a great race—by bicycle, bookmobile, even Mr. Lemoncello’s corporate banana jet!—to find fascinating facts about famous Americans—and win spectacular prizes. But when a few surprising “facts” about Mr. Lemoncello surface, it might just be game over!

Don’t miss the bonus puzzle in the back!

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
Book 2
THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD!

Discover what James Patterson calls “the coolest library in the world.” Follow along and solve the clues in this interactive adventure featuring Mr. Lemoncello’s first-ever Library Olympics! From the co-author of Murdle Jr.: Sleuths on the Loose…

“Lots of action and quirky humor will lead kids to do just what libraries encourage them to do: keep reading.” —The Washington Post

The world-famous game maker Luigi Lemoncello is at it again! This time Mr. Lemoncello has invited teams from across America for the debut of the Library Olympics. Kyle Keeley knows that the competition is fierce. But something suspicious is going on—books are missing from the shelves! Is someone trying to censor what the kids are reading? Now it’s not just a game, and Kyle and his friends will have to band together to get to the bottom of this mystery. Let the games begin!

Don’t miss the bonus puzzle and the craft in the back!

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
Book 2
THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD—NOW FULL-COLOR, FUN-PACKED GRAPHIC NOVELS!

Discover what James Patterson calls “the coolest library in the world.” Follow along and solve the clues in this interactive graphic novel featuring Mr. Lemoncello’s first-ever Library Olympics! From the co-author of Murdle Jr.: Sleuths on the Loose and illustrator of The Last Kids on Earth…

“Lots of action and quirky humor will lead kids to do just what libraries encourage them to do: keep reading.” —The Washington Post, on Mr. Lemoncello’s Library Olympics

The world-famous game maker Luigi Lemoncello is at it again! This time Mr. Lemoncello has invited teams from across America for the debut of the Library Olympics. Kyle Keeley knows that the competition is fierce. But something suspicious is going on—books are missing from the shelves! Is someone trying to censor what the kids are reading? Now it’s not just a game, and Kyle and his friends will have to band together to get to the bottom of this mystery. Let the games begin!

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 a graphic novel)
Mr. Lemoncello’s Library Olympics (also 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
Book 1
THE START OF THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD!

Can you escape from what James Patterson calls “the coolest library in the world”? Follow along and solve the clues in this interactive adventure! 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

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
Book 1
THE START OF THE NEW YORK TIMES BESTSELLING SERIES WITH MORE THAN TWO MILLION COPIES SOLD—NOW A FULL-COLOR, FUN-PACKED GRAPHIC NOVEL!

Can you escape from what James Patterson calls “the coolest library in all the world”? Follow along and solve the clues in this interactive graphic novel! From the co-author of Murdle Jr.: Sleuths on the Loose and illustrator of The Last Kids on Earth…

“A worthy successor to the original madman puzzle-master himself, Willy Wonka.” —Booklist, starred review of Escape from Mr. Lemoncello’s Library

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 solve every clue and figure out every secret puzzle to find the hidden escape route!

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

Mr. Lemoncello’s Library : Bundles & Boxed Sets

About Chris Grabenstein

Image of Chris Grabenstein Photo: © Elena Seibert

When I talk to kids about my new book THE ISLAND OF DR. LIBRIS, I torture them with a tale of electronics deprivation.
     "My main character, Billy Gillfoyle," I say, "is spending the summer in a cabin on a lake.  There More about Chris Grabenstein

About Douglas Holgate