more historical mystery reading

I read all four Kat Holloway novels, and one novella, by Jennifer Ashley over the last few days, and really enjoyed the competent heroine and the cast of side characters. I'm also mostly okay with the very slow burn of Kat's relationship with her love interest/fellow sleuth Daniel McAdam, though the drawn out yet repetitive revelations about his secretive government or government-adjacent investigator/fixer/secret agent job (whatever it'll eventually turn out to be) have been getting a bit tiresome by novel four.

Though I'm still bummed that having read the newest that just came out, I'll now have to wait quite a while for the next book. I'll have to look for another decent historical mystery series, since it looks like I've been having good luck actually finishing novels in this genre, when reading is still hit and miss right now.

Do you have any favorites? I tried the Ian Rutledge series, but felt a bit meh, after the first three. A while ago I started the first Sebastian St. Cyr mystery by C.S. Harris, but got stuck and lost interest a little bit into it. Maybe I should see whether I can stick with that now. Or I could try another of Anne Perry's Charlotte and Thomas Pitt books. I think I read the first three of that series after coming across a random later one some years back, and liked them okay, but didn't get completely sucked in.