"In the slowly sinking city of Coconino, Arizona, the days are long, the money is tight, and the rain never stops. For Jin Haldar, this life is nothing new—ever since her father died in a diving accident, she’s barely made ends meet for her and her younger sister, Thara. Enter Bhili: a drifter who offers Jin and Thara the score of a lifetime—a massive stash of gold hidden in the sunken ruins of Las Vegas. Jin knows it’s too dangerous. She...

"Twelve-year-old Crow has lived her entire life on a tiny, isolated piece of the starkly beautiful Elizabeth Islands in Massachusetts. Abandoned and set adrift in a small boat when she was just hours old, Crow's only companions are Osh, the man who rescued and raised her, and Miss Maggie, their fierce and affectionate neighbor across the sandbar. Crow has always been curious about the world around her, but it isn't until the night a mysterious fire...

"Twelve-year-old twins Bickford and Rebecca Kidd and their two older siblings travel to Africa to track down priceless artifacts that will keep the family's treasure hunting business afloat long enough to rescue their kidnapped mother--and possibly find their missing father"--

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. Local people believe that the ghostly animal is carrying out the curse of Dirk Valentine, the romantic outlaw who was killed many years ago at Shadow Ranch, where he had gone to fulfill a promise to his sweetheart. Suspecting that a treasure hidden by Valentine...

It was only a few weeks ago that the Biedermann twins, Tess and Theo, along with their friend Jaime Cruz, followed the secrets of the Morningstarrs' cipher further than anyone had in its century-and-a-half history -- and destroyed their beloved home in the process. But the Old York Cipher still isn't solved. The demolition of 354 W. 73rd Street only revealed the next clue in the greatest mystery of the modern world, and if Tess, Theo, and Jaime want...

A boy and his dog set sail in search of treasure, braving stormy seas, snowy mountains, and other challenging obstacles, before finally reaching the end of their quest: the treasure of Pirate Frank.

Five children who are the offspring of supernatural criminals and who have special abilities of their own leave their isolated tropical home and head to the city of Estero, where they hope to find their parents and the treasure they hid years ago.

Seventh-graders Sloane and Amelia are devastated to be paired for a research project about long-lost jewels, but soon they are finding clues hidden for nearly a century--and realize they are being used.

When the Hardy boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are unaware of the baffling complications that will arise. The only clue to the long-lost treasure is a cryptic message written by a Pilgrim ancestor. But when Mr. Dodd and Jack are accused of stealing cars and then mysteriously disappear, Frank and Joe are confronted with a triple mystery. Have their friends run...