Medicus, apa
Medicus and the Disappearing Dancing Girls, apa
Ruso and the Disappearing Dancing Girls, both better titles than just
Medicus IMO, is the first title in Ruth Downie's enjoyable (again IMO) historical Ruso/Tilla series set mostly in Roman Britain. It goes up and down in price a bit, but rarely as low as $0.99, which is what it is priced right now at both Kindle and Kobo US. If you have wanted to try this series and like to read in order, this would be a good time to grab this one...
Kindle US:
https://www.amazon.com/Medicus-Novel...dp/B0013TX7NY/
Kobo US:
https://www.kobo.com/us/en/ebook/medicus