This book was a little heavy on the science for my taste. It does get right into the main problem from the start, but it's a little slow on the action. There are three viewpoint characters, two of which are scientists. The third is the wife of one of the scientists and it's her viewpoint I liked best, because she was an ordinary woman trying to protect her kids.
There was a point where I considered not finishing the book because I got so bored, but I muddeled through and eventually there was some good action and even a few scenes that made me tear up, which is always a plus.
The writing was fine, the plot was well paced, and the characters were both believable and three dimensional, but all in all this book simply wasn't to my taste.