The principal of Jill and Gwen's school is on the roof honoring his promise that he'd spend the day there if the kids read 1,000 books during their marathon. He's even planning to read the story Gwen wrote. But he's going to fall off the roof if he doesn't stop sneezing. Fletcher and his flea pal, Jasper, know that Gwen wouldn't trick the principal with sneezing powder just to make her story come true--but can they prove it? Illustrations.