"Cold Reign" was a fun read that brought the series back to form.
Finally, the evil European Vampires have arrived. We've been waiting for them for what feels like forever. Their arrival picks up the pace, challenges existing relationships, reveals long-planned treachery, and unleashes lots and lot of violence.
I enjoyed seeing Jane moving with more freedom now that she no longer has to hide her true nature. I was glad to see Beast playing a significant part in the action. I always enjoy seeing the world from her unique point of view.
The story made sense (at least in part - there's more to come) of the various additions to Jane's household, the alliances that she's made and the magical objects she's acquired. It's clear that she's going to have to draw on all of them to survive the arrival of the European Vampires.
Jane's powers continue to evolve in useful ways and she, perhaps more importantly, she continues to grow and to make better connections with the people around her and the "family" or clan she has built for herself.
"Cold Reign" casts-off two problems that I'd been having with earlier books: Jane was losing her humanity and she was spending her time protecting some not very nice vampires. In this book, Jane leaves her humanity behind and accepts that she has become something else. Something that she relishes and that those she cares about accept and value. Protecting the vampires is put in a more positive light now that the "take over the world and kill them all" European vampires have arrived. They are a threat worth fighting against.
This book is about as good as it gets in the Jane Yellowrock universe: vivid battle action with blades, bullets, stakes, fangs, claws and lots and lots of blood, snarky humour, byzantine plot, new players and new magics and, at the heart of it all, a set of people worth protecting.