Joffe Books publish a few authors I like: Jeanne M Dams, Veronica Black, and Nicholas Rhea come to mind. And they publish some others who are probably good as well, but that with my too-large TBR list, I just never really get around to trying. And they also do occasional freebies and nice price drops from time-to-time.
Per an email I just got from Joffe today,
Deadly Lies, apa
A Worm in the Bud, which is the first in Chris Collett's Detective Mariner series, is free from now until October 14. I haven't read anything of Collett's, but for free...
Kindle US:
https://www.amazon.com/dp/B075XT8Y4D
Kindle UK:
https://www.amazon.co.uk/dp/B075XT8Y4D
And probably also at some other Amazon country sites, per their email...