Joseph Flynn started off as traditionallly published, but has been published by his own Stray Dog Press for quite a while. I have read all (I think) of his Jim McGill titles, most of his John Tall Wolf books, all of his Ron Ketchum books, and a few of his non-series books. I’ve liked all that I’ve read, except for a couple of the non-series books. Right now (March 10, 2021) two of his non-series titles are free at Kindle US and UK. I’ve read and liked one of them, haven’t read the other one.
The President’s Henchman is the first in the Jim McGill series by Joseph Flynn. The first few titles in this series were conventionally published before Flynn created his own Stray Dog Press, about which you can make your own decision as to whether it is self-pub or not. I have, however, read and enjoyed almost all of the books in this series as well as some other books in spin-off series. Henchman is free right now at Kindle US and UK…
Kindle US: https://www.amazon.com/dp/B00DPYK8KK
Kindle UK: https://www.amazon.co.uk/dp/B00DPYK8KK
Another non-series title by Joseph Flynn, One False Step, is free right now at Kindle US and UK. I haven’t read this one, so happy to see it go free!
Kindle US: https://www.amazon.com/dp/B004YQCPHW
Kindle UK: https://www.amazon.co.uk/dp/B004YQCPHW
Nailed is the first in Flynn’s Ron Ketchum series. It’s free right now at Kindle US and UK.
Kindle US: https://www.amazon.com/dp/B004U362DC
Kindle UK: https://www.amazon.co.uk/dp/B004U362DC
Four Joseph Flynn books are free right now. Three of them are repeats from the OP or comments above, but I’m putting the links here again just to make it easy. Also, a lot (or all) of the Jim McGill books are KU, so if you like the first one and have a KU subscription, you can binge for free – or at least for your sunk cost…
The President’s Henchman, book 1 of Jim McGill series
Kindle US: https://www.amazon.com/dp/B00DPYK8KK
Kindle UK: https://www.amazon.co.uk/dp/B00DPYK8KK
One False Step
Kindle US: https://www.amazon.com/dp/B004YQCPHW
Kindle UK: https://www.amazon.co.uk/dp/B004YQCPHW
Farewell Performance
Kindle US: https://www.amazon.com/dp/B002UKOWP2
Kindle UK: https://www.amazon.co.uk/dp/B002UKOWP2
Blood Street Punx
Kindle US: https://www.amazon.com/dp/B004NNV4T6
Kindle UK: https://www.amazon.co.uk/dp/B004NNV4T6
Nailed is free again at Kindle US and UK. The links two comments up are still good…
McGill’s Short Cases 1-3 is pretty much what it sounds like: three short stories in the Jim McGill series by Joseph Flynn. This series started out conventionally published, but I haven’t noticed any issues since Flynn moved to his own Stray Dog Press. Short Cases is free right now at Kindle US and UK…
Kindle US: https://www.amazon.com/dp/B00DJ5ZFY4
Kindle UK: https://www.amazon.co.uk/dp/B00DJ5ZFY4
Four freebies are up right now from Joseph Flynn:
Tall Man in Ray-Bans (John Tall Wolf # 1)
Kindle US: https://www.amazon.com/dp/B007FIQMHU
Kindle UK: https://www.amazon.co.uk/dp/B007FIQMHU
Still Coming (non-series)
Kindle US: https://www.amazon.com/dp/B0053DU68U
Kindle UK: https://www.amazon.co.uk/dp/B0053DU68U
Blood Street Punx (non-series)
Kindle US: https://www.amazon.com/dp/B004NNV4T6
Kindle UK: https://www.amazon.co.uk/dp/B004NNV4T6
One False Step (non-series)
Kindle US: https://www.amazon.com/dp/B004YQCPHW
Kindle UK: https://www.amazon.co.uk/dp/B004YQCPHW
As I’ve mentioned before, I really like some of Flynn’s series (John Tall Wolf, Jim McGill, Ron Ketchum), but I haven’t been as enamored of his non-series stuff. But, of course, YMMV…