Ten-year-old Leo's future and the fate of the extraordinary Whippet Hotel, where his father is the maintenance man, are at stake when a series of cryptic boxes leads Leo to hidden floors, strange puzzles, and unexpected alliances.

At the end of World War II, Jack Baker, a landlocked Kansas boy, is suddenly uprooted after his mother's death and placed in a boys' boarding school in Maine. There, Jack encounters Early Auden, the strangest of boys, who reads the number pi as a story and collects clippings about the sightings of a great black bear in the nearby mountains.

Twelve-year-old genius and outsider Willow Chance must figure out how to connect with other people and find a surrogate family for herself after her parents are killed in a car accident.

Danny is not sure what to make of Calvin Waffle, a quirky and smart new fourth grader, but when Danny convinces Calvin to use his brain power to help the baseball team, they both have a chance to become heroes.

"As her high school graduation draws near, Glory O'Brien begins having powerful and terrifying visions of the future as she struggles with her long-buried grief over her mother's suicide"-- Provided by publisher.

When Katharine Tulman foils an attempt to kidnap her Uncle Tully, she finds herself caught up in international intrigue. Aware that there are people who want to turn her uncle's mechanical fish into an explosive device, and unsure of who to trust, she decides to fake her uncle's death and flee to Paris in search of Lane Moreau, her uncle's assistant.

Having explored every part of the fantastical Whippet Hotel, Leo discovers that it hides even more amazing secrets beneath its foundation, in an adventure that puts the hotel's fate in Leo's hands.

Rose, nearly sixteen, is used to traveling around with her alcoholic father but connects with the people of a small, coastal Australian town, especially classmate Pearl and reclusive Edie, who teaches her to sew a magical dress for the Harvest Festival while a mystery unfolds around them.

Welcome, boys and girls, readers of all ages, to the first-ever Library Olympiad! Kyle and his teammates are back, and the world-famous game maker, Luigi Lemoncello, is at it again! This time Mr. Lemoncello has invited teams from all across America to compete in the first ever LIBRARY OLYMPICS. Will it be fun? Like the commercials say... HELLO? It's a Lemoncello! But something suspicious is going on... books are missing from Mr. Lemoncello's library....

Great changes are in store for the highly creative and somewhat eccentric Applewhite family when money problems force them to open a summer camp for gifted children, who almost immediately begin to rebel, while a mysterious interloper watches from the woods.