Tabula Rasa by Ruth Downie (historical fiction mystery 2014)

The third book in the Gaius Ruso mystery series is awesome.  My own enjoyment of these novels has been enhanced by my recent class about Hadrian's Wall and the people and things around it, but I think anyone would like this book.  The humor isn't overdone and the mystery is a tricky one.  I'm excited that the end of the book suggests that Gaius and Tilla are going to Rome.  Downie is so good at describing Britannia that I'm dying to read her version of the Eternal City.