I really liked this. I snuck into my mom's regency romance stash as a teen, so I have a soft spot for anything in the Regency or Victorian age. I also loved Sherlock Holmes, so Victorian-era mysteries are a favorite as well. With this book, I felt like I got both, with the added fun of vampires, werewolves and ghosts. 
 It was different from anything I had read at the time, so it still sticks with me. 
 Need to read the next books in the series.