A top-secret, US government-sponsored underwater facility in the Micronesian Islands that was vitally engaged in biomedical research on a rare jellyfish known as the Blue Medusa abruptly stopped. . . vanishes. A bathysphere is attacked by an underwater vehicle off the coast of Bermuda at the same time, leaving its passengers— including Zavala helpless and half a mile below the surface.

Only Kurt Austin's brave actions keep them from drowning, but Austin alerts the NUMA team to the situation because he thinks there may be a link. He has no idea the situation he just got them into a terrifying round of medical tests, a criminal group in China, and a newly discovered virus that poses a global pandemic threat. Although Austin and Zavala have faced challenging circumstances previously, this time saving millions of lives is more important than simply their own skin.

I found it impossible to put down this book because of how fast-paced it is. However, I wouldn't rank it among the top thrillers I've ever read. It's undoubtedly one of the greatest pandemic-related thrillers I've ever read. This novel published in 2009, featured "scary characteristics" of a Chinese virus and a potential third world war. Reading this in 2022 makes me truly nervous since this book foresaw the future in some way.