This extremely popular book was one I read quickly — the story of unhappy Rachel, who leaps to conclusions about the lives of a couple whose backyard she glimpses through the window of her London commuter train kept me turning pages, wanting to find out how all the pieces would git together. In this sense, it did its job as a thriller, and crafted a satisfying ending that made sense of all the plot threads that had gone before. However, in terms of engaging with the characters and caring deeply about their fates, the book fell a little flat. I tore through it in a day, but the characters haven’t lingered in my mind to the extent that I’m still thinking about them a few weeks later. Good, but by no means great, is my judgement on this novel.