Dirk Pitt(r) is the world's greatest adventure hero -- a man of action who lives by his wits and daring. As Special Projects Director for the U.S. National Underwater and Marine Agency (NUMA), he is cool and courageous, with a love of fast cars and extreme danger. After an unknown force kills thousands of marine animals plus nearly two hundred people aboard a cruise ship, Dirk Pitt traces the destruction back to a merciless Australian millionaire. From a chilling escape at a high-security diamond mine to a tiny boat adrift on lonely, shark-infested seas, the ingenious Dirk Pitt races to stop a madman's ruthless plans -- before an unthinkable disaster claims millions of innocent lives!