The series has the feel of animation: the serious situations and adult themes are well blended with clever or obvious humor. Some of the events are terrible but it all is lighthearted in tone; so animation. This tale of revenge has several twists and a subtle ending. I liked the first three books and this one was just as good. So I recommend it for sci-fi humor fans as well as those of apocalyptic tales with a humorous bent. Two thumbs up