Oona and her best friend Otto love to search for treasure...and often find trouble instead. Messy trouble. Tricky trouble. Even shark-related trouble. That's never stopped them before, though! After all, no proper treasure hunt is without some adventure. But when the grandest treasure yet is stuck in a deep, dark rift, Oona's not sure if she can dive right in. What might be waiting for her in those unknown waters?

Bestselling author Jude Watson takes Amy and Dan on a thrill-packed ride for the 4th installment of The 39 Clues series.

Betrayed by their cousins, abandoned by their uncle, and with only the slimmest hint to guide them, fourteen-year old Amy Cahill and her younger brother, Dan, rush off to Egypt on the hunt for 39 Clues that lead to a source of unimaginable power. But when they arrive, Amy and Dan get something completely unexpected - a message...

When Geronimo's sister, Thea, discovers an old, mysterious map showing a secret treasure hidden on a faraway island, the gang of the "Rodent's gazette" is dragged into a treasure hunt.

Brooke thinks her wish for long-lost treasure in her own back yard is foolproof. But with no map to help her find it, she finds herself wondering if she'll ever be able to find it.

Leo's love of exploring sometimes gets him into trouble, so when some of his classmates get lost in the woods during a school field trip, Leo is faced with the difficult decision of whether to go in search of them or remain with the rest of the class.

Be an eyewitness to the exciting search for precious artifacts, hidden or lost through the centuries and rediscovered by archaeologists and treasure hunters.

Told in different voices, on Centerlight Island, halfway between the United States and Canada, middle-schoolers Keenan and ZeeBee team up to seek gold rumored to be hidden there a famous gangster.-- Provided by Publisher.

After bonding over their distaste for the roles they are expected to fill, Rapunzel and Cassandra discover a secret lagoon said to hold the kingdom's greatest power.

When Ted inherits his uncle's apartment "and all the treasure within," he realizes the apartment is set up like a real-life video game and must solve the puzzles with his friends to discover the treasure.

Sukie braves the twists and turns of the spooky Poe Annex at the New-York Circulating Material Repository to untangle ancient family secrets, find hidden treasure, and help the ghosts who are haunting her house.