A deadly tide poisons ocean waters... a ghost ship drifts empty in the calm open sea... a Soviet luxury liner explodes into flames. The ocean's secrets hide a sinister conspiracy -- and the tide of terror comes crashing home when the U.S. President disappears from his yacht. As the fate of the U.S. government hangs in the balance, Dirk Pitt must face down a vicious Asian shipping cartel -- and seize one desperate moment of revenge!