This was definitely my least-favorite book in this series, and not just for one reason, but for several small reasons that add up.
**** Some spoilers below ***
This book was extremely boring in different places, particularly the middle. I don't need to read page after page of Diana reading tarot cards (also, she's an oracle now?).
There were so many odd things thrown in that didn't seem to amount to anything or to really have a purpose; the love potion, the owl, the naked people in the forest, the "Elsewhere", the memory jars, and now they're using wands and there are fairies?
There were also too many living people to keep track of, and also ghosts - but it seems some of these people were previously notable in other parts of the series, but there was nothing to help me remember what their significance was (like Janet, or Tally (who?) or Thomas Lloyd (again, who?)).
Also, now Sarah is someone who is vilified, when she was loved and revered before? And Meg was supposed to be this sinister person, but turns out she wasn't really? And we were supposed to fear the twins' evaluation from the Congregation, but it turned out to be a nothing-burger? It was just all so weird, and didn't seem to go anywhere. I did like the last little bit when Diana was in Venice, but that was only 72 hours and we were back to the boring witch homestead in the U.S.
This book made me realize that what I like best about this series is the interplay between the vampires, the witches, and the daemons. This book focuses mostly on the witches, and I didn't like it. I wanted more of Matthew, Ysabeau, Marcus, Gallowglass, and the others. I definitely missed that passionate connection between Matthew and Diana, which was notably absent here.
This book seems to be setting up for another in the series, and I just hope the next one is more interesting, less all-over-the-place, and focuses more on the vampires.