Steven Saylor began publishing his Roma Sub Rosa mystery series in 1991 with Roman Blood, a novel centered on one of Cicero’s actual legal cases — the defense of Sextus Roscius against a charge of parricide — and has continued through more than a dozen novels, each using a historical crime or legal proceeding as the vehicle for an exploration of late Republican Rome. The series’ detective, Gordianus the Finder, operates as an investigator for hire in a society that had no professional police force, appearing at the margins of the major political events of the period and providing a ground-level perspective on the world that the official historical record’s focus on senators and generals does not supply.