When Mark Honigsbaum discovers an ancient Spanish treasure guide buried in his research notebooks, he cannot help but be drawn into the legend of Valverde, a conquistador with a treasure trail that has proven fatal for the past 400 years. Undeterred by the cursed history of the gold, Honigsbaum embarks on an epic journey into the last uncharted range in the Andes--the Llanganati Mountains of eastern Ecuador. This is the story of how the lure of gold intoxicates even the most level-headed of historians, and of how men--and women--are seized with the desire to claim treasure from one of the most inhospitable landscapes in the world. Honigsbaum battles through mountains, jungles, and conflicting stories, and, as he draws closer to the hidden cache, illuminates the allure of lost gold and the hold it has on our imagination.