30. Sheriff Hassan brings a gun into St. Patrick's Church and Mildred is the one to fire it, but at whom?
From Quiz Midnight Mass - Book VI: Acts of the Apostles
Answer:
Father Hill
As the Angel enters St. Patrick's Church, the people of Crockett's Island recoil in terror and Father Hill urges them not to be afraid. The creature stands before them at the altar and spreads its wings as Sturge rises from death, taking to his feet and embracing Father Hill, resurrected. The Scarboroughs take to their feet as well, handing cups of Compound 1080 to the congregation alongside Bev. Most of them already have the Angel's blood inside them; all they need to do is open their minds and their hearts and take one leap of faith.
Sheriff Hassan attempts to drag his son from the room, but Ali resists, taking his place by Father Hill's side. To the surprise of the townspeople, the Sheriff draws a gun and fires it into the air but he's taken down by the other members of the congregation and restrained. Bev steps forth, thanking Ali for setting an example in front of the others and placing a cup into his hands. While his father cries, Ali takes the drink, chooses God, and dies in Father Hill's arms.
The other townspeople follow suit while a small group tries to convince them not to drink the poison. Mildred, grabbing the discarded gun off the ground, fires it at Father Hill, hitting him in the head before the Angel leaps forth, grabs her, and flies off into the night. All the while, the congregation dies to be reborn again.