The Dark Days Club combines regency era manners with supernatural action. Lady Helen starts the book preparing to be presented to the Queen, start her season, and marry well. She never suspects that soon she will be training to fight demons and save innocent souls. Soon, she is bending the rules of the time and risking the ruin of her reputation. It’s pretty good (Even though it is very exposition-heavy), and I’m interested in seeing where the series goes next.
You can read my review here.