I was drawn in by the fact that I've loved other books by this author.  She has a way of making you feel as though you're a part of Victorian London.  Her descriptions of people, places and even mundane things are a true lyrical gift.  However, the middle of this book dragged on for me.  It was as though we were living through Maud & Sue's dreary days with them.  I get that some of that is necessary to create suspense, but after a while, it seemed overkill and it got stale.  

The beginning and the end were fabulous, and even parts of the middle sucked me in.  There were a lot of twists that got me and some that didn't.  No doubt, however, that there is no clear "good" or "bad" characters in this novel, only varying shades of gray- and I loved that!!