This story is told backwards. We meet Robbie and Emily in their eighties, the first chapter is Robbie's last day, following on from that each section of the book takes us back a decade or two. It's not until the very last chapter that we can see how their lives have played out, how the domino effect really started.
I enjoyed this a lot, it felt like watching a film in reverse. Great concept, I'd pick up more titles from this author.