Well, there's the Pope, his Council of Cardinal Advisors, the Catholic orphanage, "perpetual adoration" in the orphanage chapel, a Mass at St. Peter's Basilica, rosary beads and prayer, a priest as one of the main POV characters, a lengthy trip through the Holy Land retracing the footsteps of Jesus, an exorcism chapter, several healings, dead cardinals and bishops, events from Revelation, the Vatican, visions of ancient events from the Bible, Satan, the Antichrist, the False Prophet, and Jesus Christ himself.
Pretty much a Catholic series, which was my intention from the outset. There is already a series of novels called Left Behind that tells the story of Revelation from a Protestant Dispensationalist POV (a literal interpretation). So many Christians think that's the Catholic POV, too, since there are no comparable Catholic novels.
The books are Connor's journey.