If you're not new to this forum (and assuming you want them in the first place

), you probably already have all of the books in Julie Smith's Skip Langdon series, since they go free pretty often, either individually, or in various omnibuses. But just in case, here are three individual titles, and also an omnibus of the first three titles in the series, all for free right now. This is more than are usually free at one time...
Skip Langdon Vol 1-3 (
New Orleans Mourning,
The Axeman’s Jazz, and
Jazz Funeral)
Kindle US:
https://www.amazon.com/dp/B00KGO4QVE
Kindle UK:
https://www.amazon.co.uk/dp/B00KGO4QVE
And just for fun...
New Orleans Mourning won the 1991 Edgar Award for Best Mystery...
Death before Facebook (apa
New Orleans Beat), #4
Kindle US:
https://www.amazon.com/dp/B008DP2B56
Kindle UK:
https://www.amazon.co.uk/dp/B008DP2B56
House of Blues, #5
Kindle US:
https://www.amazon.com/dp/B008NOY09W
Kindle UK:
https://www.amazon.co.uk/dp/B008NOY09W
Murder on Magazine, #10
Kindle US:
https://www.amazon.com/dp/B079VRDCFC
Kindle UK:
https://www.amazon.co.uk/dp/B079VRDCFC
The first five were conventionally published before being e-published by Smith's own BooksBNimble press, which also publishes (and/or re-e-publishes) a bunch of other authors, like Tony Dunbar, Shelly Singer, etc.
And when I went to the
BooksBNimble website, just to verify, I discovered they are offering a "mini-anthology" of two free Skip Langdon short stories (
The End of the Earth and
Always Othello) in exchange for joining their mailing list. Up to you whether you want to give them your email. (I'll come back and update if I get inundated with email, but I don't expect to...)