Recommended by a friend. And... surprisingly good. The conceit here is that some people, after dying, go back to the beginning of their lives and do it over, but keep their memories. So, Groundhog Day but... Groundhog Life. And there are a bunch of people this happens to, and they eventually find one another. It's a good conceit. There is some extremely windy speculation and planning about messages going forward and backward in time, and someone who destroyed all the future generations before it got fixed, and I just let that wash over me without thinking about it too hard. It feels like The Time-Traveller's Wife but it's actually nothing at all like it, apart from involving weird timey-wimey things. Ends... a bit anticlimactically.