Clive Cussler, author of the bestselling Dirk Pitt series, and his co-author, Graham Brown, send hero Kurt Austin into the heart of the storm in the action-packed NUMA Files series.

A new energy source holds the promise to change the world. If it doesn't kill it first.

It's called zero point energy - a state of energy contained in all matter everywhere, and all but unlimited. Nobody has ever found a way to tap into it, however . . . until one scientist does.

The problem is, his machines also cause great earthquakes, even fissures in tectonic plates. One machine is buried deep underground; the other submerged in a vast ocean trench. If Kurt Austin, Joe Zavala and the rest of the NUMA team aren't able to find and destroy them - and soon - the world will be on the threshold of a new era of catastrophe and unchecked volcanism.

Praise for Clive Cussler

'Cussler is hard to beat'
Daily Mail

'Clive Cussler is the guy I read'
Tom Clancy

'The Adventure King'
Daily Express

Clive Cussler was the author of more than eighty books in five bestselling series, including Dirk Pitt®, NUMA Files®, Oregon Files®, Isaac Bell®, and Sam and Remi Fargo®. His life nearly paralleled that of his hero Dirk Pitt. Whether searching for lost aircraft or leading expeditions to find famous shipwrecks, he and his NUMA crew of volunteers discovered and surveyed more than seventy-five lost ships of historic significance, including the long-lost Civil War submarine Hunley, which was raised in 2000 with much publicity. Like Pitt, Cussler collected classic automobiles. His collection featured more than one hundred examples of custom coachwork. Cussler passed away in February 2020. Graham Brown is the author of Black Rain and The Eden Prophecy, and co-author of books in Clive Cussler's bestselling NUMA Files® series. A pilot and an attorney, he lives in Arizona.