This is a dark, grim, paranormal, mystery taking place in London during the late 19th century. consciously parallels Jack the Ripper series of murders as if demonic forces are at work. 
 As a period piece it works well showing how police investigations worked back then and understand why Jack the Ripper was hard to catch. 
 However, I have issue with the structure or narrative of the story. Starts off as a mystery but reveals the villain before you have any real chance of guessing. The whole story is slow and drawn out which makes the sudden ending feel anti-climatic. A lot of side questions were left unanswered and not in a prepare for sequel kind of way. 
 I don't normally read paranormal or horror. This book does not make me want to start. 
 As a side note: The main character is named Dr. Bond? Seriously, Every time the name is mentioned I was taken out of the story. Kept waiting for him to say "The name's Bond, Dr. Bond."