A thrilling Dirk Pitt adventure from megabrand bestselling author Clive Cussler

A man has developed the most revolutionary naval technology in decades- an attack submarine that can travel unimaginably fast.

This man is dead. And part of his prototype is missing.

Dirk Pitt and his NUMA team travel across the world in their search to retrieve the missing element, and as they close in, they discover that they are facing a much more dangerous threat than they had ever imagined.