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 a mysterious silvery mineral traced to a long-ago expedition in search of the fabled Northwest Passage. But no one survived from that doomed mission, captain and crew perished to a man--and if Pitt and his colleague Al Giordino aren't careful, the very same fate may await them.
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