I haven't done a book review in a very long time but I just got finished reading this YA novel that I found throughly enjoyable. The most accurate description probably is Sherlock mixed with shades of Elementary and a pinch of the supernatural as it involves the teaming up of an eccentric consultation and a likable female narrator as they investigate the supernatural during the late Victorian era. Don't let the pat description turn you off. It may sound like Sherlock-lite but it's truly a fun read.
( Non spoiler review )