Homemade Sin is the third in the Callahan Garrity series by Kathy Hogan Trocheck, who also used the pen name Mary Kay Andrews. It's $1.99 right now in the US. Per
SYKM, the first couple of books in this series were finalist for various awards...
Kindle US:
https://www.amazon.com/dp/B0017098E6
Kobo US:
https://www.kobo.com/us/en/ebook/hom...rity-mystery-a