Nick and his friend Marta decide to investigate when a mysterious fire starts near a Florida wildlife preserve and an unpopular teacher goes missing.

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.

Thirteen-year-old Amari, a poor Black girl from the projects, gets an invitation from her missing brother to join the Bureau of Supernatural Affairs and join in the fight against an evil magician.

Thirteen-year-old Sophia Tims, with her friend Theo, continues to search for her parents, explorers who have vanished as the borders shift within a world transformed by the Great Disruption of 1799.

Sharron's father has disappeared, and she tries to cope with her feelings of loss through the love of a stuffed dog he gave her.

As young archaeologist Will Burrows continues to search for his lost father in the strange underground world he has discovered beneath the city of London, he stumbles across a sinister plot with terrible implications for the world above.

Alex Cross' son, Ali, is eager to follow in his father's footsteps as a detective, but when his best friend goes missing, what price will he have to pay to solve the mystery?

When his parents disappear after a fierce storm, eleven-year-old Danny, unaccustomed to acts of bravery, comes to their rescue after finding a valuable shard of wood that enables him to talk to plants and animals and battle terrifyingly powerful enemies,including the demonic Sammael.

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....

Eleven-year-old Aurora Petrequin's best friend has never spoken a word to her. In fact, Frenchie Livernois doesn't talk. Aurora is bouncy, loud and impulsive. Making friends has never come easily. When Frenchie, who is autistic, silently chose Aurora as his person back in third grade, she chose him back. They make a good team, sharing their love of the natural world in coastal Maine. In the woods, Aurora and Frenchie encounter a piebald deer, a rare...