Multi-award-winning, New York Times best-selling duo Mac Barnett and Jon Klassen deliver the final wry and resonant tale about Triangle, Square, and Circle.

This book is about Circle. This book is also about Circle’s friends, Triangle and Square. Also it is about a rule that Circle makes, and how she has to rescue Triangle when he breaks that rule. With their usual pitch-perfect pacing and subtle, sharp wit, Mac Barnett and Jon Klassen come full circle in the third and final chapter of their clever shapes trilogy.

The Queen of England calls on Mac B. once again! This time, Mac must crack a secret code that has been recovered from a double agent. A series of clues leads Mac to France, and then to Japan, where he comes face-to-face with his arch-nemesis, the KGB man... and the world headquarters of Nintendo! Is the KGB Man secretly behind all of this? And are Mac's video game skills good enough to facedown his enemy at the Video Game World Championships?

With Mike Lowery's signature illustrations on every page, historical facts woven throughout, and of course intrigue, history, hilarity and more, catch the latest in this totally smart, wholly original, side-splittingly funny series from the wildly talented author Mac Barnett.

From the dream team of Jon Klassen and Mac Barnett comes the second instalment in the exciting new shape trilogy.

Every day, Square brings a block out of his cave and pushes it up a steep hill. This is his work. When Circle floats by, she declares Square a genius, a sculptor! “This is a wonderful statue,” she says. “It looks just like you!” But now Circle wants a sculpture of her own, a circle! Will the genius manage to create one? Even accidentally?