Fiction by Angela White.
I got this book free on Kindle for my phone. I really hate reading on a screen instead of a book, so that factor may have negatively influenced my opinion of this story.
That being said, I could not finish this book. The post-apocalyptic plot was all right, although a bit gory, but the characters were hard to get interested in. The good guys were unsympathetic and the bad guys were truly horrid. Everyone was kind of one-dimensional.
I think it might make a better movie that a book. Maybe.