An extremely dark story about the end of the world brought about by.. that's the question the books seems to be seeking. Zoe, which means life in Greek, is the main character, she is trying to maintain her humanity in a world where there is none. The story is told in the past and the future switching back and forth in time. It keeps you interested if only to see how things turn out. I'm not sure if I want to read the next in the triology though.