kcfromaustcrime, There are times when I kick myself for being so far behind with my reading list - The Wife and The Widow by Christian White is a case in point:
If you've not read THE WIFE AND THE WIDOW yet then you're in for an absolute treat - but stay away from too many spoiler's and see if you can pick the twist before it slaps you over the head like it did this reader.
https://www.austcrimefiction.org/review/wife-and-widow-christian-white-0