A Pattern of Lies is the 7th (and next to last, until a new title comes out in September) in the Bess Crawford series by Charles Todd. It has dropped to $1.99 at Kindle and Kobo US.
Info and Kindle US link in this previous post:
https://www.mobileread.com/forums/sh....php?p=3331292
Kobo US link:
https://www.kobo.com/us/en/ebook/a-pattern-of-lies