So I got the free sample from Amazon, it's the first few chapters of the book due for release in May 2015.
It teases you into wanting to read the rest of the book - and read it I shall, but not until much later in the year when I can purchase it.
It has whet my appetite for Sarah's writing style. It's simultaneously flowing and descriptive but also tells you just what you need and no more.
A brilliant glimpse into what will surely be a great book.