I gotta say the series’ name combining the words “Mercenary” and “Librarians” was what attracted me to this book. I enjoyed this book a lot. The characters grew on me, the plot was as intriguing, the romance was NOT the usual  “alpha male” dynamic, and there are very strong female characters. I liked the post-apocalyptic world-building with super soldiers, augmented humans,  librarians, mercenaries, big corporations, and people trying to help others.