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?

Twelve-year old orphan Emma Casey lives by a haunted graveyard in her Tennessee town, giving tours, and helping her brother and Granny Blue with the family bakery, and waiting for the destiny dream of her ancestors--but when it comes it shows her only a key, and she finds that she must solve a ghostly mystery that has haunted her town for generations.

When his gift for pickpocketing is noticed by the mysterious Finn Argos, Colm begins training to become a member of Thwodin's Legions, a strange group of warriors, mages, and hunters who search for treasure.

When Pinkalicious and Peter play treasure hunters on the family hike, what they find is even better than what they expected--it's treasuretastic!

Treasure hunters Harriet, Jack, and Toby find a second lost journal and travel to the Nether to find a missing explorer.

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.

The Redwallers face some of their most dangerous villains yet in a treacherous hunt for long-lost treasure.

Riff Raff, a bold mouse pirate, searches for a missing clue that will help him and his cheese-loving crew complete a treasure hunt.

After meeting Herman the Treasure Hunter during a career fair at Emerson School, every second-grader is looking for treasure and finding it--except for Ivy and Bean.

Thirteen-year-olds Sloane and Amelia embark on their first paid detective job to find a time capsule buried on the grounds of Cedar Point Amusement Park, but encounter opposition from a vengeful schoolmate, the park manager, and a ghostly figure.