There are 4 books in the The Terrible Two series. The newest book is The Terrible Two's Last Laugh which came out in 2018.

1
The Terrible Two

By Jory John , Mac Barnett , Kevin Cornell (illustrator)

Book cover of The Terrible Two
Miles Murphy is not happy to be moving to Yawnee Valley, a sleepy town that's famous for one thing and one thing only: cows. In his old school, everyone knew him as the town's best prankster, but Miles quickly discovers that Yawnee Valley already has a prankster, and a great…
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2
The Terrible Two Get Worse

By Mac Barnett , Jory John , Kevin Cornell (illustrator)

Book cover of The Terrible Two Get Worse
Separately, pranksters Miles and Niles were pretty devious. But now that they've teamed up together to form a pranking duo, they are truly Terrible! It's a good thing they have come into their own as friends and pranking partners as their powers will be tested when their favourite goat and…

3
The Terrible Two Go Wild

By Mac Barnett , Jory John , Kevin Cornell (illustrator)

Book cover of The Terrible Two Go Wild
Everyone's favorite pranksters are at it again! School's out, and Miles and Niles are running wild in the woods outside town: climbing trees, exploring caves, and, yes, pranking. But these leafy, lazy days of mischief darken when bully Josh Barkin and his cadets from a nearby kids' boot camp discover…

4
The Terrible Two's Last Laugh

By Mac Barnett , Jory John , Kevin Cornell (illustrator)

Book cover of The Terrible Two's Last Laugh
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…