I read the first three books in this series. They are all short, more like novellas. I was intrigued by the plot and excited to read the series. My excitement waned, as I continued to read. A lot of characters are introduced, similar to a classic Russian novel, where you need an index of some sort to keep track of them all. The brevity of the books and the large number of characters doesn't allow for much character development. Maybe that will come in subsequent books, but I'm not sure I'm going to read on. You'd think I'd care about the continuation of humankind on Earth, but without attachment to any of the main characters, it's going to be difficult to motivate myself to read more. I'm disappointed.