Rescuing an oil survey team from a freak wave on Russia's Lake Baikal is all in a day's work for adventurers Dirk Pitt and partner Al Giordino. Yet when their ship is sabotaged and the survey team vanishes, Pitt is forced to get to the bottom of a mystery with far-reaching consequences. Soon he's on his way to Mongolia. There, a powerful and ruthless business tycoon holding an astonishing secret about Genghis Khan is hoping…