It’s Miles and Niles’s final year at Yawnee Valley Science and Letters Academy, and the Terrible Two have one goal: an epic prank. Something big, something brilliant, something that will leave a lasting legacy at their school. Which should be easy-peasy for these experts, especially now that their principal has gone from archnemesis to pranking protégé.  
            But their smooth sailing gets downright bumpy when they find out that the new superintendent is none other than Bertrand Barkin, their principal’s father . . . and their sworn enemy. Now that Former Principal Barkin is Acting Superintendent Barkin, he has a first order of business: his long-promised revenge on the Terrible Two. 
            This rollicking finale to the bestselling series by Mac Barnett and Jory John will settle once and for all who—between quick wits and powerful fists—will have the last laugh.
 

Mac Barnett’s bestselling children’s books include the 2013 Caldecott Honor Book Extra Yarn. He lives in Berkeley, California.

Jory John is a New York Times bestselling author of books for both children and adults. He is a two-time E.B. White Read-Aloud Honor recipient. Jory's work includes the picture books Giraffe Problems and Penguin Problems, both illustrated by Lane Smith, the Goodnight Already! series, illustrated by Benji Davies, The Bad Seed and The Good Egg, both illustrated by Pete Oswald, and the award-winning Quit Calling Me a Monster!, illustrated by Bob Shea. He also co-authored numerous humor books, including the internationally bestselling All My Friends Are Dead. Jory spent six years as programs director at 826 Valencia, a nonprofit educational center in San Francisco. He resides in Oregon.

Kevin Cornell is the illustrator of many children’s books. He lives in Philadelphia.