Book #5 in the Mercy Thompson series.
Another fantastic entry in this series. Lots of stuff happens here, we learn more about the pack and its internal dramas/rules/etc., about Samuel, about the fae. I couldn’t put it down!
I’m super into these, I’m into the related Charles/Anna books, I’ve read her more “medieval”-type fantasty as well (here or here or here). I just think everything Briggs writes is fantastic.