This book is fabulous. It's a crime novel, but the narrative is unique and tender. It's a slower paced book, with lots of detail, but it's all needed, there are no superfluous passages. The story is about finding the killer of an art student in London, however, we learn far more about the devotion between two sisters and their mother. There are some surprises along the way and some heartbreaking moments. Rosamund Lupton writes beautifully and I hope she writes more novels.