An ancient secret hidden in a forgotten city holds the key to modern riches in this exhilarating sequel to Blood and Treasure. Once you've made your first ten billion, what's more money? What any billionaire really wants isn't money, it's power, and Shan Zhang has the perfect plan to achieve that. The discovery of a manuscript from the renowned explorer Marco Polo leads to an ancient city buried under the snows of Antarctica. Within that city lies the key to a forgotten technology that will transform modern society, but that transformation may cause the deaths of millions. Professional treasure hunter and adventurer Ethan Cain is working on the Mekong River in Vietnam when the massive waterway suddenly goes dry. It's a stunning ecological disaster. One that Ethan can't ignore. His quest for answers will lead him to Zhang and ultimately a confrontation from which only one of them will emerge.