Название книги: Lost Empire

Sam and Remi Fargo, heroes of Spartan Gold, return in this extraordinary new adventure from the number-one New York Times- bestselling author. With Spartan Gold, a daring thriller that Publishers Weekly proclaimed "solidly in the Cussler tradition, [and] sure to please new fans and old," Clive Cussler introduced husband-and-wife treasure-hunting team Sam and Remi Fargo. In their electrifying new adventure, the Fargos make a startling discovery that others would kill to keep hidden… While scuba diving in Tanzania, Sam and Remi Fargo come upon a relic belonging to a long-lost Confederate ship. An anomaly about the relic sets them off chasing a mystery-but unknown to them, a much more powerful force is engaged in the same chase. Mexico's ruling party, the ultranationalist Mexica Tenochca, is intent on finding that artifact as well, because it contains a secret that could destroy the party utterly.