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 that will leave a lasting legacy at their school. Which should be easy-peasy for these experts.

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 (Extra Yarn, Sam and Dave Dig a Hole) and Jory John (Penguin Problems, The Bad Seed) will settle once and for all who--between quick wits and powerful fists--will have the last laugh.