Ex Libris Books in Order

Assigned an archival internship in Seville after cheating on her exams, Sarah expects an uneventful summer. A series of priests' murders draws her and her supervisor into a mystery involving the Inquisition and Vatican secrets that someone will kill to protect.

The Vatican asks Patrick Bauer to investigate a boy whose apparent miracle has raised claims that he is the Messiah. Reuniting with Sarah Wilderman, Patrick enters a web of competing influences while troubling questions emerge about the child's true nature.

When the Pope is poisoned, Patrick and Sarah investigate the Vatican’s competing factions and concealed agendas. They must identify the person responsible before the struggle over his succession allows a killer to assume the papacy.

During a sabbatical in St. Louis, Sarah enjoys romance and friendships until a brutal murder makes her a killer's target. Her search for answers reaches back to a vanished group of mathematicians and a mystery that has remained unresolved for decades.