One of those books that if you get the wrong impression about what sort of narrative it has, from the blurb and internet reviews, you may end up not enjoying it. I thought it was going to be a psychological mystery in the vein of Barbara Vine, especially as it is dominated by a house. Whilst it may be a relative of Vine's, it's a distant one. I would call this almost a mood piece, but even that gives the wrong impression because McHugh still uses the tropes of psychological thrillers to a very rewarding effect. To describe it makes it sound less original than it is - a young woman, Arden, who may or may not be a reliable narrator, returns to her family home, having lived a life haunted by the disappearance of her infant twin sisters when she herself was a young child. Reliability or lack of it, always a good bet for a mystery, lies deeper in this book than most. Arden is writing a thesis on nostalgia and this book continually undermines notions of history and memory. Both the house and the Mississippi river dominate the book in unexpected ways. There are hints of the supernatural too. McHugh also undermines cliches of the mystery, like a visit to a fortune teller, in immensely satisfying ways. Rarely have I found such satisfaction in the final chapters of a mystery as in this book; McHugh reveals layers which continue to mirror and enhance her themes, whilst staying firmly in an utterly believable narrative. It left me moved and reflective, lingering on in me as my favourite books usually do.