Sin & Magic is the second in KF Breene's Demigods of San Francisco series, which I've read most of, and have liked all that I've read. Although the entire series is KU,
Sin & Magic has dropped to $0.99 at Kindle US right now, so if you don't have KU, or just want to have the book and not have to return it, this is your chance...
Kindle US:
https://www.amazon.com/Sin-Magic-Dem...dp/B07KV1ZDP3/
Kindle US/Smile:
https://smile.amazon.com/Sin-Magic-D...dp/B07KV1ZDP3/
And the first book in the series seems to be sort-of long term at $2.99, which is not too bad, with occasional bumps up or down from there. So if you want to read in order, but don't have KU, it won't set you back too much. And besides, who can resist a book titled
Sin & Chocolate...
Kindle US:
https://www.amazon.com/gp/product/B07J3BR4Q7
Kindle US/Smile:
https://smile.amazon.com/gp/product/B07J3BR4Q7