3rd book of Sebastian St. Cyr series. C.S. Harris is an excellent writer and had me hooked from beginning to end. Very atmospheric of dark underside Regency London. Plot is flawlessly constructed with lots of twists and turns. Characters are well-drawn. Looking forward to the next book. I recommend this series to those who like historical fiction, romance, mystery. You should read in order and start with the first book, What Angels Fear.