Naturally, I held a high hope and expectations of this book (I could attest to the author's brilliance because I had the pleasure of reading her Eon series, which is one of my all-time faves btw). And let me just happily say that The Dark Days Club rightly met those high hopes and expectations. 
 Some may find other parts of the book to be quite dragging and superfluous but never once have I found and felt anything to be so. I had intended to read this book slowly because I wanted to literally savor every word and every detail. It was such a gratifying reading experience! I fell in love with the setting (London in Regency era), the originality of the plot and the paranormalcy, the decorums of society, manner of the dialogues, Lady Helen and Lord Carlston and the tension between them...and many many more. Alison Goodman's extensive research of the world-building and its adherence to some historical facts is truly impressive! I can't praise this book and the author enough. I could hardly wait for the DARK DAYS PACT!