I've also read and liked (and remember better) most of the books in Catriona McPherson's Dandy Gilver series - also cozy, but occasionally with a bit of bite. But McPherson also writes some non-series thrillers, and since I'm not usually much for thrillers, I haven't read any of those. Now, however, Joffe is offering
The Day She Died, which, per
SYKM, won the 2015 Anthony Award for Best Paperback, for free.
One note, since I've been super busy at work, and am late posting, it may not be free much longer. So grab it now if you want it!
Kindle US:
https://www.amazon.com/dp/B099S6ZJQY
Kindle UK:
https://www.amazon.co.uk/dp/B099S6ZJQY