The Ending Of The First Omen Explained

Early in «The First Omen,» Margaret, a young novitiate of the Catholic Church, is met by Cardinal Lawrence (Bill Nighy) at the airport in Rome. Margaret was mentored by Cardinal Lawrence when she was young and has been loyal to him ever since. She’s in Rome to work at Vizzardeli Orphanage before becoming a nun. At the orphanage she’s introduced to Sister Silva (Sonia Braga), the head of the facility. She also meets Carlita, an orphan who draws strange pictures.

Father Brennan (Ralph Ineson), an excommunicated priest, approaches Margaret in St. Peter’s Square and tells her Carlita is involved in evil doings. But Margaret only sees the good in Carlita. When one of the sisters at the orphanage horrifically commits suicide, however, Margaret visits Brennan in secret. He asks her to bring him the files about Carlita, thinking there’s a conspiracy within the Church to have her give birth to the Antichrist. 

While the nuns are welcoming Luz (Maria Cabellero), Margaret’s roommate, to their ranks, Margaret finds a secret passage in the wall of Sister Silva’s office. She follows it to the basement, where she finds the files on Carlita … and all the other attempts to birth a child fathered by Satan. Margaret is stopped from attempting to escape with Carlita by the nuns, but not before she sees the mark of the Antichrist — 666 — on the roof of Carlita’s mouth. Father Gabriel (Tawfeek Barhom), who’s sympathetic to Margaret, breaks her out and they return to Father Brennan.