I was really looking forward to reading this book, thinking it would be a continuation of the previous book, Red Thunder. I was disappointed. It does somewhat continue the story of the original characters but I didn't really get involved as I did with Red Thunder. The first half of this book is about a world-wide disaster on Earth and trying to find family in the middle of all the chaos. Then it switches back to Mars. If you haven't read the previous book, the second half of this one seems like an afterthought. I also didn't care for the way the story with Jubal was wrapped up because there really wasn't a resolution. I am hoping the next book in the series, Rolling Thunder will fill in some of the many gaps.