Those Gordianus the “finder” books were great reads.
Indeed, I read every one and loved them. Then I read his 3 volume set on the one Roman family from the beginning through 1000 years. Then I switched to a competitor who also writes about a Roman detective who is at some of the same events at Gordianus. That is the SPQR series by John Roberts.
https://www.amazon.com/gp/product/B003J5650W/ref=ppx_yo_dt_b_d_asin_title_351_o00?ie=UTF8&psc=1
Enjoy!