Kurt Austin and Joe Zavala are diving for treasure . . .

Specifically, the legendary hoard of Pirate Queen Ching Shih, lost in the South China Sea. But no sooner than they've found a clue than a more pressing matter requires urgent attention: a nearby freighter carrying the world's most state-of-the-art computers has vanished.

NUMA must find the ship - and fast. If hackers, criminals or terrorists get hold of it, this cargo could be the Information Age's most deadly weapon.

Plunged into a cyberwar that has spilled into real life, facing modern-day pirates and cut-throat billionaires, Kurt and Joe are about to discover just how perilous are the high seas . . .