Have rated this book 4 stars, though it's closer to a 3.5, 3.75 for me.
The book has an interesting, uncommon structure, though it doesn't completely work. Based mostly in London, we first meet our four main characters not long after the end of WWII, in 1947, in various ways still traumatized by the war. We start learning outright or otherwise guessing that their lives intersect or have intersected at various times. The next main part of the book shifts to 1944, and we learn more about what lies behind/beneath the traumas of these characters. The last part of the book shifts further into the past of these characters, to 1941.
As I mentioned, an interesting way to format the book, peeling back layers, discovering how the characters' presents were shaped by these earlier events. The reader starts making and seeing more and more connections, not just in terms of how the characters have been related to each other in the past, how some of their relationships began, but also about the traumas of war in general. The second section of the book, especially, the events taking place in 1944, are often quite harrowing and very effective. But the one DISadvantage of the author's approach is that by taking a reverse linear chronology, the traditional buildups are upended, not the worst thing, but not necessarily replaced with the stronger potential denouements that were perhaps intended. Put another way, by the time the book ends, I'd quite forgotten where our characters had ended up, so to speak, in 1947.
I'm writing all this hurriedly, so perhaps not explaining myself very well. In any event, I did like the book, especially in the middle sections, and Sarah Walters was really very good in conveying the many horrors, small and large, and even the humor, of the war years. I would recommend the book, just with the caveat that I wasn't as moved by the characters as I maybe ought to have been, both because of who they were, and because of the reverse structuring of the book. Lastly, the sadness of the characters' LGBTQ lives having to be hidden, suppressed, repressed, etc., was something that Walters wrote about especially well, and it helps me understand my "lineage" that much more, and appreciate how our "ancestors" built lives out of the chaos of the war years and in a time when to do so was illegal and outside the pale. Thank you!