Enola Holmes, much younger sister of detective Sherlock Holmes, must travel to London in disguise to unravel the disappearance of her missing mother.

When the difficult star of the reality television show "Expedition Survival" disappears while filming an episode in the Florida Everglades using animals from the wildlife refuge run by Wahoo Crane's family, Wahoo and classmate Tuna Gordon set out to find him while avoiding Tuna's gun-happy father.

In 1955, Woodrow and his cousin Gypsy befriend a new girl in their seventh grade class in rural Virginia, and the three of them set off to find Woodrow's missing mother, encountering unlikely and intriguing coincidences along the way.

When Will Burrows and his friend Chester embark on a quest to find Will's archaeologist father, who has inexplicably disappeared, they are led to a labyrinthine world underneath London, full of sinister inhabitants with evil intentions toward "Topsoilers" like Will and his father.

"One day a young couple wakes to find a boy asleep on their porch. Unable to speak, the boy cannot explain his history. What kind of people would leave their child with strangers? All John and Marta know is that they have been chosen to care for this boy. As their connection to him grows, they embrace his exuberant spirit and talents. The three of them blossom into an unlikely family, but how long can their happiness last?"-- From dust jacket flap....

In the town of Placid, Wisconsin, in 1871, Georgie Burkhardt is known for two things: her uncanny aim with a rifle and her habit of speaking her mind plainly.But when Georgie blurts out something she shouldn't, her older sister Agatha flees, running off with a pack of "pigeoners" trailing the passenger pigeon migration. And when the sheriff returns to town with an unidentifiable body-wearing Agatha's blue-green ball gown-everyone assumes the worst....

In his second adventure, eleven-year-old Gregor returns to the world beneath New York City to rescue his kidnapped sister, Boots, and fulfill a prophecy that will restore peace to the people, bats, rats, cockroaches, and spiders who populate the underworld.

In Portland, Oregon, between soccer games and beginning seventh grade, twelve-year-old Madison Kincaid and new classmate Jake try to track down her missing best friend, while also helping her attorney father solve a missing-persons case.

When the evil Overtakers gain control of a computer server at the Magic Kingdom, allowing them to put the holographic hosts into permanent comas if they should fall asleep, Finn and the others race against time to find the missing Jez and foil the plan.

The Greystone kids thought they knew. Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best--acting silly and being adored. They've been a happy family, just the three of them and their mom.But everything changes when reports of three kidnapped children reach the Greystone kids, and they're shocked by the startling similarities between themselves and these complete strangers. The other kids...