Classical Rome is the setting for this historical murder-mystery. Part of the "Roma sub Rosa" series featuring Gordianus the Finder.
I haven't read any of the previous books of this series, or, in fact, any of Saylor's work. Not a bad introduction; This is a solid enough read, it is more or less self contained though, inevitably, past volumes are referenced and the ending leaves plenty of loose ends for the next episode.
Told in a dual narrative structure, in the first person, the two strands are the events leading up to and following on from the death of Cassandra, a mysterious prophetess. This structure is maintained almost to the end of the book and is well done.
The set up, a collection of Rome's most powerful women present themselves as suspects at the girl's funeral, feels very forced but apart from this one scene, which is needed for plot purposes of course, the historical detail and background is convincing.