"My father's ships will be at the sirens' mercy. We will be the ones to reach the island first and claim its treasure for ourselves. Alosa's 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. Riden, still unfairly attractive, is a constant distraction, but at least he's under her orders this time. But when...

Sixteen-year-old Robbie Daniels, happy to get a job aboard a troller fishing for king salmon off southeastern Alaska, finds himself in danger when he discovers that his mysterious captain is searching for long-buried Russian plaques that lay claim to Alaska and the Northwest.

Sixteen-year-old expert archer Merry Owen is desperate to save her family's farm in Wales, in the shadow of the Black Castle, and when she finds a buried chest containing an ancient and hopefully valuable Welsh text, she hopes it will be the key to a fortune--and so it is, but not in the way she expected, for it sends her and her friend James de Courcy into past.

London sixteen-year-old Danny Temple and friend Omar use their computer and parkour skills to elude pursuers as they follow clues in an Arabic manuscript to the mysterious cliffs of Bandiagara in sub-Saharan Africa seeking an ancient treasure.