Fast paced and an incredibly complex inter-woven plot. A great psychological thriller which will keep you gripped and the pages turning. This was a bit of a slow starter for me, but the further in the book I read, the more gripping it became. 
 Written from a dual POV from both sisters, both past and present, this keeps the intrigue throughout. 
 This author has a great way with words and a wonderful style of writing. I will definitely check out more from this author in the future.