As with all Clive Cussler's dazzling Dirk Pitt novels, critics said Treasure of Khan "amazes, informs and entertains" (Publishers Weekly), "the action zipping along until a final powerhouse showdown" (Entertainment Weekly). "What's not to like? " proclaimed the Los Angeles Times-and hundreds of thousands of readers agreed. In his new novel, however-the twentieth Dirk Pitt adventure- Cussler may have topped even himself. A potential breakthrough discovery to reverse global warming . . . a series of unexplained sudden deaths in British Columbia . . . a rash of international incidents between the United States and one of its closest allies that threatens to erupt into an actual shooting war . . . NUMA director Dirk Pitt and his children, Dirk. Jr. and Summer, have reason to believe there's a connection here somewhere, but they also know they have very little time to find it before events escalate out of control. Their only real clue might just be