Cussler is a master of the plot. Unfortunately, the plot of this tale is totally unbelievable. I wish I had counted the incidents in which the main characters extracted themselves from death defying situations through extraordinarily unbelievable means. I just could not believe the machine that created earthquakes on demand, nor the hiding of an entire motorcycle under a desert bush.
As for characters, I was truly disappointed in the total lack of character development in this book. There was none. Two of the main players were so poorly defined that I constantly confused one from the other.
I will invite you to read Amazon or some other cite for a formal review. I consider this one to be more in the nature of a warning.
Cussler co-wrote this book with his son--I suppose he is trying to groom the younger man to continue the Cussler dynasty. This book did nothing to pass on a brilliant legacy. Sorry.