A very interesting book; a bit confusing at first, until you come to realize that Pete Shah’s job is to delve into recorded memories… so some of the interstitial chapters are from his professional research and only tie indirectly to the main plot.
There’s a strong theme of memory and identity, and how they’re linked. It’s not abstract or musing–it’s an interesting police procedural with weird tech. The big tech is memory recording and dissemination–basically simsense and BTL–but there are other strong elements, like the expensive personal transportation due to climate taxes, flooding and sea walls, etc. There’s also reference to a great thinning of the planet by plague a generation or two ago.
I liked the world building, the continuity of existing cultures, even with the remade map of this near future. The world is grim, but by no means hopeless.
I really like the changes to Pete as he rebuilds himself; near the end, he points out just how much of the impact of tragedy is lessened when you don’t viscerally remember the reasons you love and hate. The cat and mouse between Pete and Kotian is setup at the beginning and delivers by the end.