This novel takes as its topic the persecution of Christians under the Roman Emperor Vespasian (69 AD to 79 AD).

"Esdras, the Jewish slave, is aghast when he realizes he has betrayed Sabinus, an outlawed Roman officer, under torture, while his fellow slave, a Christian, remained steadfast. He is converted and devotes himself to Sabinus' family."
(Kelly).

"Story of Sabinus & Eponina, derived from Plutarch & connected with the history of Flavius Clemens, one of the early martyrs. Sabinus is accused of joining with the enemies of Rome & condemned to death by Vespasian."
(Baker, p. 327).