I found these books in the library a few years back and I injoyed them so much that I have reread most of them. Unlike a lot of detective tipe of books I found them to be great fun and well worth reading, with charaters that I could truely get behind and like.
Here is a little a little info (very little as I know that some people don't like to spoiler alerts) :
"Marcus Didius Falco is the central character and narrator in a series of novels by Lindsey Davis. Using the concepts of modern detective stories (with Falco as the private investigator, roughly translated into the classical world as a "private informer"), Davis portrays the world of the Roman Empire under Vespasian. The tone is arch and satirical, but the historical information provided is carefully accurate."