Told against the fourth-century backdrop of the fall of the Roman Empire and the rise of Christianity, The Saint’s Mistress breathes life into the previously untold story of Saint Augustine and his mistress.

Defying social norms and traditions, the love between the Roman aristocrat Aurelius Augustinus and Leona, a North African peasant, creates a rift with his mother Monnica, his powerful patron Urbanus, and the Empire itself. When Monnica and Urbanus succeed in separating Leona from her son and securing a more suitable fiancée for Aurelius, Leona commits herself to the Church.

When many years later Leona and Aurelius, now Bishop Augustine, meet again, old passions re-ignite, perennial feuds smolder, and the fate of the Roman Empire in North Africa hangs in the balance.