Fear Familiar is the first in the Black Cat romantic suspense series by Carolyn Haines, who is, I think, much better know for her Sarah Booth Delaney/Southern Belle mystery series. I debated whether to put this in the romance thread or the mystery thread, but in the end, SYKM lists it, so I went with mystery.
Fear is free right now at Kindle US.
link:
https://www.amazon.com/Fear-Familiar...dp/B06XRPCFZ1/
Familiar Trouble, also by Haines, is the first in the Familiar Legacy series, which features the son of the cat protagonist in the Black Cat series above. It is not listed in SYKM, but is published by the same press that SYKM considered acceptable for the Black Cat series, so I'm going ahead and including it in this post.
Trouble is also free right now at Kindle US.
link:
https://www.amazon.com/Familiar-Trou...dp/B072MPCVV2/