I think I read the first book in this series when it came out and then again...recent-ish?
Anyway, this book took forever to finish, although that’s because this is really a Shabbos book that I need the uninterrupted time of Saturday afternoon to sink into rather than reading it piecemeal when I can steal time during the week. But, alas, I happen to have it in kindle form.  
The premise remains kind of bonkers - what if Regency and Victorian but also the world is ending? In that respect it has the problem that so many stories have when they begin with “what if 19th century literature?” which is that they will, inevitably, diverge and then it’s just what if fantasy? 
Beckett does a shockingly good job of holding onto the Austenian flavor of the language, but the book shifts swiftly into Bronte’s register of good and evil, retribution and reward (albeit with far more modern sensibilities) and the two never fully reach detente even as the story progresses and the “what is going ON” questions finally get answered in like the last 50 pages. 
This book is 600+ pages of buildup and then an avalanche. But wow does it take a while to get going. 
And yet, Beckett is still really interesting in what he’s trying to do and I want to know what happens next. Just, you know, not quite yet.