Meg Murry, her brother Charles Wallace, and their friend Calvin O'Keefe become involved with unearthly strangers and a search for Meg's father, who has disappeared while engaged in secret work for the government.

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.

"One hundred and fifty years ago, the first dinosaurs were cloned. Soon after, they replaced humans at the top of the food chain. The only way to survive was to move into underground compounds. . . . Five years ago, Sky Mundy's father vanished from North Compound without a trace. Now she has just stumbled on a clue that not only suggests his disappearance is just the tip of an even larger mystery, but also points directly to the surface. To find her...

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...

While five little mice at Mouseford Academy are looking for their missing biology professor they dive to a haunted shipwreck off Whale Island to find a rare diamond that was lost when the ship sank.

"Following clues left by their missing father, twelve-year-old twins Bickford and Rebecca Kidd sail from the Caribbean to New York City with their siblings to finish the dangerous quest of their world-famous treasure-hunting parents"--Provided by publisher.

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?

After fourteen-year-old Ozzy's scientist parents are kidnapped, Ozzy's only help may be a classified ad that says "Wizards for hire."