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.--

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

Big Pirate Pete's treasure map has led him to Seabreezy Library, where Library Lou must convince him that the true treasure is the books.

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When Hiccup finds a coffin at sea, he opens it to discover a riddle that will lead to the treasure of Grimbeard the Ghastly, the world's greatest pirate and Hiccup's ancestor. So Hiccup and his friends set out on a treasure hunt, determined to master the art of swordfighting. How else will they escape an island of murderous dragons, defeat a boatload of Viking pirates,...

Worried about his new friend, a shy octopus named Ollie, Penguin recruits the other animals to help look for him, and discovers something more precious than treasure.

Alosa is the daughter of the Siren Queen, and her mission is finally complete. Not only has she recovered all three pieces of the map to a legendary hidden treasure, but the pirates who originally took her captive are now prisoners on her ship. Still unfairly attractive and unexpectedly loyal, first mate Riden is a constant distraction, but now he's under her orders. Now Alosa and her crew are in a deadly race with Vordan, the pirate king, to find...

The Alden children travel on a Mississippi paddle-wheel steamer to visit an old family friend in his cabin near Hannibal, Missouri, and try to discover who is responsible for the mysterious activities near the house.

While staying at the Crooked House, the family home of their housekeeper Mrs. McGregor, the Aldens try to solve a riddle that will lead them to a hidden treasure.

"Connor and Kiki go in search of pirate treasure, but their plans change when they encounter a basking shark in need of help. Can they find the treasure as well as rescue the shark? Only time will tell!!"--

The Aldens accompany their grandfather to his class reunion and investigate the possibility of a buried Civil War treasure, and of a ghost in the bell tower, at Goldwin University.