While continuing to help his classmates solve their problems, Humphrey, pet hamster of Longfellow School's Room 26, faces many surprises, like rolling in a hamster ball, a substitute janitor who might be an alien, and the possibility of Mrs. Brisbane retiring.

In a future where the law limits a family to only two children, third-born Luke has been in hiding for the entire twelve years of his life, until he enters boarding school under an assumed name and is forced to face his fears.

Chase does not remember falling off the roof, in fact he does not remember anything about himself, and when he gets back to middle school he begins to learn who he was through the reactions of the other kids--trouble is, he really is not sure he likes the Chase that is being revealed, but can he take the opportunity amnesia has provided and restart his life?

Members of the Baby-sitters Club are determined not to let Dawn get hurt by her new boyfriend Travis, who is older and always telling her what to do.

"Charlie Joe Jackson is back and he's at academic summer camp trying to convert all the other kids to non-academics."--

Welcome to Nowhere, Arizona, the least livable town in the United States. For Gus, a bright 13-year-old with dreams of getting out and going to college, life there is made even worse by Bo Taylor, Nowhere's biggest, baddest bully. When Bo tries to force Gus to eat a dangerously spiny cactus, Rossi Scott, one of the best racers in Nowhere, comes to his rescue--but in return she has to give Bo her prized dirt bike. Determined to buy it back, Gus agrees...

When Jerome Kildee, a solitary man, builds a home in a redwood forest in California, he takes in some skunks and raccoons, but as they begin to multiply, Kildee looks to two human neighbors for help.

When Toby finally decides to join the middle school basketball team, he does not anticipate the changes that will occur in his relationship with his best friend JJ, who is the team's star player, as well as in other areas of his life.

For ten-year-old Gabe, the Summer Center for Gifted Enrichment is all that he dreamed it would be, but he must work hard to write about the fun in letters to Zack, his cool future stepbrother, without revealing that it is a camp for "nerds."