The Angel of the Crows
The Angel of the Crows by Katherine Addison.
This time Sherlock is very much on the side of the angels
I had a good time with this one; always been a fan of Sherlock and this is an interesting familiar-but-not twist on it. As usual Addison is better at teasing worldbuilding than paying it off but since this is a solo book that's much less disappointing than the Teixcalaan series and frees us up to just enjoy filling in the blanks with imagination. Reads a bit like a fanfic and apparently that's how it started, but...