Multi-award-winning, bestselling duo Mac Barnett and Jon Klassen conspire again on a slyly funny tale about some very sneaky shapes.

From the award-winning team behind Sam and Dave Dig a Hole, and illustrated by Jon Klassen, the Kate Greenaway-winning creator of This Is Not My Hat and I Want My Hat Back, comes the first tale in an exciting new trilogy.

"It's what you would expect from this pairing and then just a touch more genius. If you're not already aware of their work, we suggest you rectify that immediately. Filled with original storylines, uncomplicated but meaningful text, a discernible humour and instantly recognisable artwork, there's everything to appreciate about their work.[...] A story with a perfectly simple premise executed to perfection in the only way Barnett and Klassen know how." Picture Books Blogger

"Mac Barnett's wily story and Jon Klassen's eyes-tell-all illustrations make Triangle a really fun read-aloud for preschoolers, early elementary kids, and their adults." Boing Boing

"Klassen's restrained earthy palette and minimalist scenes (those eloquent eyes again), are in perfect harmony with Barnett's even sparer, deadpan text allowing readers to step into the narrative landscape and fill for themselves, the host of gaps left by the book's genius creators. Prankish play or something more sinister? I come down on the side of the former. This book is the first of a planned trilogy from this formidable team: I eagerly anticipate the next one ... and the next." Red Reading Hub

"The images are deceptively simple; the characters inhabit a world of triangles, squares and the "shapes with no names". Each is rendered beautifully. As with Klassen's solo work, the eyes reveal everything about the characters, bring two basic shapes-on-legs to life." Irish Times Weekend

"Barnett's sly humour is perfectly complimented by Klassen's gorgeous illustrations and wry characterisations, which have become his trademark." Largeheartedboy.com

Mac Barnett is the author of several award-winning books for children, including President Taft Is Stuck in the Bath, illustrated by Chris Van Dusen, and Extra Yarn, illustrated by Jon Klassen, which won a Boston Globe-Horn Book Award and a Caldecott Honor.

Mac Barnett lives in California, USA. Find Mac online at macbarnett.com and on Twitter as @macbarnett.

Jon Klassen is the author-illustrator of I Want My Hat Back and This Is Not My Hat, the only book to ever win both the Kate Greenaway and Caldecott Medal. He also illustrated Mac Barnett's Extra Yarn and Sam and Dave Dig a Hole, and served as an illustrator on the animated feature film Coraline. His illustrations for Caroline Stutson's Cats Night Out won the Governor General's Award in 2010.

Originally from Niagara Falls, Canada, Jon now lives in Los Angeles, California. Find Jon online at burstofbeaden.com and on Twitter as @burstofbeaden.