Nighthawk
When the most advanced aircraft ever designed vanishes over the South Pacific, Kurt Austin and Joe Zavala are drawn into a deadly contest to locate the fallen machine. Russia and China covet the radical technology, but the United States worries about a darker problem. They know what others don’t—that the X-37 is carrying a dangerous secret, a payload of exotic matter, extracted from the upper reaches of the atmosphere and stored at a temperature near absolute zero. As long as it remains frozen, the cargo is inert, but if it thaws, it will unleash a catastrophe of nearly unthinkable proportions.
From the Galapagos Islands to the jungles of South America to an icy mountain lake many believe to be the birthplace of the Inca, the entire NUMA team will risk everything in an effort to avert disaster...but they may be caught in a race that no one can win.
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Clive Cussler
Before most thriller writers were sending heroes across collapsing ice shelves or into sunken wartime submarines, Clive Cussler was already there, charting the coordinates.
Born in 1931 in Aurora, Illinois, and raised in Southern California, Cussler grew up close enough to the Pacific to feel its pull. The ocean was not background scenery for him, it was a question mark. After serving in the U.S. Air Force during the Korean War as a flight engineer and mechanic, he moved into advertising, where he learned the art of momentum, how to seize attention quickly and never let it drift. That instinct would later define his brand of adventure fiction.
NUMA Files
NUMA Files consists of twenty-one books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

