Prisoner's Gold (The Hunters 3) - Kuzneski, Chris

The travels of Marco Polo are known throughout the world. But what if his story isn't complete? What if his greatest adventure has yet to be discovered? Guided by a journal believed to have been dictated by Polo himself, the Hunters set out in search of his final legacy: the mythical treasure gathered during Polo's lifetime of exploration. But as every ancient clue brings them closer to the truth, each new step puts them in increasing danger...