In this explosive Dirk Pitt novel by the author of Inca Gold, Pitt meets the most intriguing and sinister villain of his adventurous and legendary career--a billionaire Australian diamond king with whom he must wage conflict above and below the sea for the survival of vast numbers of sea creatures and more than a million human beings. Only Clive Cussler--the Grandmaster of Adventure--could have written a story this suspenseful.