The Contagious Colors of Mumpley Middle School

Something strange is happening to the sixth grade-and it's up to student scientist Wilmer Dooley to crack the case in this hilarious mystery "filled with entertaining twists and nutty characters" (Publishers Weekly).

If there's one important thing Wilmer Dooley's dad always says, it's this: "Where are my car keys?"

Okay, maybe not that. He also says: "Observe!"

Wilmer has always known that the greatest science comes from the keenest observations. So when he observes his classmates looking a ...