Lucas has just lost his father in Afghanistan and to help him cope, his grandmother sends him to Camp Kawani. While there, he learns of the lost treasure of Thomas Jefferson Beale, a local legend of a hoard of gold buried in the mountains 200-years ago. The location is encrypted in a set of codes no one has ever been able to decipher. Lucas becomes obsessed with finding the gold to save his home and leads his newfound friends into a dangerous mission...

Geronimo and his friends set sail to the Ratlapagos Islands to search for a sunken treasure. He soon begins to suspect that they aren't the only ones looking for the treasure.

After budget cuts threaten the art and music programs at Ella Mentry School, as well as some services, groundskeeper Burke finds gold and "gilver" on the playground, causing a modern-day gold rush.

The Aldens visit Grandfather's friend at the Ogopogo Retreat and aided by puzzling clues, embark on a treasure hunt to prevent the retreat from being sold.

While in the Bahamas with Doc Ford, who is investigating invasive lionfish, Maribel, Luke, and Sabina find precious artifacts but outlaws learn of their find and come after them.

To stave off the anxiety plaguing her, Cora counts the minutes that fill her day and searches for a lost treasure near her home in California, but the sudden arrival of her long-lost uncle threatens to upend her carefully-constructed existence.

Tim and his friends travel by land and sea, collecting treasure and defeating monsters as they go.

"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 wates?"--

"Bick, Beck, and the rest of the Kidds face down their nemesis, search for lost treasure, and race to solve a generations-old mystery that threatens to ruin the Kidd family name"

Nancy arrives in Phoenix, Arizona, eagerly looking forward to a fun-filled vacation at Shadow Ranch but finds herself embroiled in a baffling mystery involving a phantom horse and buried treasure.