This is the first book this author that I'd read, and upon seeing the premise of the book (American moves to the UK) I was a little weary, because the author is American and I'm British. However this book was clearly well researched, and had just the right tone that made it so likeable, and made me laugh at all the little British things Americans see as quirky without being offended. The humour in the book was just right, and I loved the main character of Rory. The story itself was gripping and imaginitive, and the history of the Ripper was interesting without feeling like a text book. It's hard not to compare this book to other series of the same genre, because it's a genre I like so have read plenty of, but it reminded me very much of Kelley Armstrong's Darkest Powers series, which is no bad thing! But in a genre with a lot of top quality books and writing this definitely held its own.