Considering the kind of story this is, I did not expect all the loose ends to be tied up, or even for it to make a lot of rational sense. But that is not why I listened to it in the first place. I listened because it was fun. It delivered. This book was more like The Swiss Family Robinson than a prehistoric survival story, and like the Swiss Family Robinson, gave us a happily ever after. The funniest part of it was that the erotic scenes (why most listen) disrupted the story and I found myself wishing they were not there. Over all I liked the book and how it ended the series.