In the Last Analysis is the first in the Kate Fansler series by Amanda Cross (pen name for Carolyn Gold Heilbrun). This is one of the earlier mystery series I read after I pretty much finished Agatha Christie's books.
My ex-mother-in-law, who was a female academic in the northeast in the same time period as Heilbrun told me that many of the people in some of the books are pretty thinly disguised academics of the time. I enjoyed them a lot even without recognizing anyone; my ex-mother-in-law enjoyed them even more

.
Anyway,
Last Analysis is $1.99 today as part of the US Kindle Daily Deal, matched at Kobo US.
Kindle US:
https://www.amazon.com/Last-Analysis...dp/B005707OAW/
Kobo US:
https://www.kobo.com/us/en/ebook/in-the-last-analysis