Plot summary
Mildred reunites with Pruitt, with Sarah revealed to be their daughter; Pruitt admits he brought the Angel to the island to prevent Mildred's death and reunite their family. As the turned churchgoers massacre the town, survivors flee Erin’s burning house after Annie distracts Bev and Sturge by slitting her own throat. Erin, Sarah, and Hassan burn the boats to trap the turned on the island, while Bev orders all remaining buildings destroyed except the church and rec center, where the turned intend to shelter themselves. Horrified by the violence, Pruitt denounces Bev, who calls him a false prophet.
During the survivors’ attempt to destroy the final shelters, Sturge shoots Sarah, Bev mortally wounds Hassan, and the Angel attacks Erin. Erin cuts the Angel’s wings while it feeds on her, damaging its ability to fly. Pruitt fails to turn Sarah before burning the church, after which he and Mildred take Sarah’s body to a bridge she was fond of as a little girl. Ali destroys the rec center. With no shelter from sunrise, the remaining townspeople gather to die while singing " Nearer, My God, to Thee ". Leeza and Warren escape by canoe and watch the island burn as dawn arrives.
The wounded creature tries to fly away, but the story does not conclusively show whether it survives. Leeza tells Warren that she can no longer feel her legs: the healing effect of its blood is wearing off.
Credits
Adapted from Wikipedia contributors, Midnight Mass (miniseries). Series, exact episode number and English title matched. Paragraphs formatted; references and illustrations omitted. Wording revised to preserve the ambiguous creature ending; creator interview checked separately.