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by Gordon Korman

From Gordon Korman, the bestselling author of Restart and The Unteachables, comes a hilarious new story about a mysterious new teacher who turns out to be an AI robot from a secret experimental program.

Oliver Zahn, spitball champion and self-declared rule-wrecker of Brightling Middle School, is not a fan of his new homeroom teacher, Mr. Aidact. The guy is sort of stiff, never cracks a smile, and refers to them as pupils. The worst part is he catches Oliver before he can pull any of his signature pranks! Its time for Oliver and his best friend, Nathan, to show the new teacher whos boss.

But as the weeks go by, they start to realize that Mr. Aidact is not what they expected. He has an uncanny ability to remember song lyrics or trivia. When the girls field hockey team needs a new coach, he suddenly turns out to be an expert. He never complains when other teachers unload work on himeven when its lunchroom duty and overseeing detention. Against all odds, Mr. Aidact starts to become the most popular teacher at Brightling.

Still, Oliver and Nathan know that something is fishy. Theyre determined to get to the bottom of the mystery: Whats the deal with Mr. Aidact?