Nick and Marta are both suspicious when their biology teacher, the feared Mrs. Bunny Starch, disappears, and try to uncover the truth despite the police and headmaster's insistence that nothing is wrong.

"Danny Timmons has looked up to Jack Bailey ever since Jack saved two small children from drowning during the Great Flood of 1940. Now, with his father away fighting in World War II and his mother about to have a new baby, Danny relies on Jack's friendship and guidance more than ever. So when Jack goes missing without a trace from their small Appalachian town, Danny is determined to find him. He wonders if Jack's abusive father could be behind his...

When Aero Horizon 16 crashes in the Arctic, eight children emerge from the wreckage to find themselves alone and surrounded, not by ice, but by a mysterious and deadly jungle full of carnivorous plants and predatory birds--the other five hundred people from the plane are gone, not necessarily dead, but taken by something that lives in the jungle. Horizon is the debut middle grade novel for Scott Westerfeld.

After another death, Stevie must navigate mysterious riddles and track down a missing David at the same time a massive storm forces her to confront a killer.

Two teenage sleuths help their detective father search for a famous rocket scientist whose disappearance endangers the launching of the Firebird Rocket.

"Mallory Moss knows the rules of middle school. The most important one? You have to fit in to survive. But then Jennifer Chan moves in across the street, and that rule doesn't seem to apply. Jennifer doesn't care about the laws of middle school ... Then Jennifer goes missing. Using clues from Jennifer's journals, Mallory goes searching. But the closer she gets, the more Mallory has to confront why Jennifer might have run ... and face the truth within...

"When she learns that her mother is sick in Ohio, Mim confronts her demons on a thousand-mile odyssey from Mississippi that redefines her notions of love, loyalty, and what it means to be sane"--

The Chicken Squad is on the case when their beloved human, Barbara, goes missing around the same time they hear a report of a headless bear on the loose.

Ranger the time-travelling Golden retriever was trained for search-and-rescue and even though he did not pass the tests he has used his training on his many trips to help people caught up in disasters; now he has arrived at the World Trade Center on the morning of September 11, 2001 just as the first plane hits, and he must rescue fifth-graders Risha and Max who are trapped in the wreckage, guide them to safety, and hopefully reunite them with Risha's...

In 1871 Wisconsin, thirteen-year-old Georgia sets out to find her sister Agatha, presumed dead when remains are found wearing the dress she was last seen in, and before the end of the year gains fame as a sharpshooter and foiler of counterfeiters.