3.5*. I like to listen to Clive Cussler audiobooks. Maybe it's because he writes his books like a movie. So I can listen as if to an old-fashioned radio play. If you're a fan of Dirk Pitt books, you would like this. Sure, he and his sidekick, Al Giordino, are older. However, that does not stop them stumbling into these adventures. We have a parallel story involving Dirk's children. The 2 storylines inevitably connect. One does not read these books expecting deep philosophical discussions. There is no in-depth psychological examination of the villain's motives. This is pure, action-packed fun.