This 2017 psychological thriller should have been called a supernatural thriller. It's good, but it's more like The Sixth Sense than Gone Girl. I was two-thirds of the way through the book before I realised that the ending was going to involve some kind of extraordinary phenomenon. This meant I was disappointed by the ending, but I still thought it was very clever and it made me want to go back and read parts again (knowing what I now knew).
The book tells the story of Adele and Louise. Adele is beautiful, seemingly a little unhinged, and married to psychiatrist David. They have recently moved to a new town. Single mother Louise kisses a man in a bar; he turns out to be her new boss and Adele's husband, David. Adele orchestrates a secret friendship with Louise, as Louise and David's affair blossoms.
