The Throne of Caesar is the 13th and most recent (2018) in Steven Saylor’s Gordianus the Finder series – unless you count the prequels, in which case, it’s the 16th, but still the most recent. It has dropped to £2.99 at Kindle UK. I don’t see books in this series on sale very often, so even if it’s a bit more than I like to pay (£1.99 is better for backlist!), I’ll probably get this one.
Buy at Kindle UK