Excellent 4th volume in unique series
The series started with "Old Man's War" and ultimately continues for a total of six books by this date, Oct 9, 2016. In the first book the author created a truly unique story line, and he has worked it successfully through all the succeeding books. His characterization is believable, and the characters are generally easily visualized, even the intelligent but weird space creatures. Snappy dialog. The overall setting is multi-galaxy wide, but the specific story lines are localized. The SciFi innovations are mainly in bio-adaptation, especially after the first book.
This book successfully concludes the arc started in the third book. Although many of the events are the same as in the third book, the perspective is very different, and there are a lot of background situations and neat little back-stories introduced with this volume. In fact, several act almost as plot twists from the predecessor. This book could be read by itself, but it will be best enjoyed if read in the order of the series.
