I really enjoy the character development and the continuation of the storyline. There is a surprising amount of intrigue as to what certain characters will do. I did not expect who was added as a permanent party to Carl and Doughnuts crew. The current voice actors are outstanding. I hope to hear more new voices in the coming books. This is an amazing audio book series, in fact the only one I encourage others to listen try.
Only dislike I have is the setting of this book. Underground with trains. Very little interesting description of the environment. Leaves a very mundane uninteresting imagination of what the players traverse through.