Plot summary
Onias tells Taba that the power of being the "One" corrupted Ron. Flashbacks address the Mountain Meadows Massacre of 1857 and conflicting accounts of what occurred. Pyre is asked to twist the law to save the LDS Church from bad publicity, but he refuses. Pyre's loss of faith causes a rift in his marriage. Allen tells Pyre that he and Brenda reconciled before her death. Jacob gives Dan's journal to the police, which Pyre uses to identify leads. Pyre and Taba go to Wyoming to interview Chip and Ricky, who recall Dan slashed Brenda and Erica's throats while Ron helped.
Taba confronts Pyre about blindly believing the LDS Church's version of history. In Miami, Florida, Dianna's children are taken to a safe house. Dianna returns to the Lafferty home, finds Matilda, and they flee Utah. Pyre and Taba locate Ron and Dan in the Circus Circus Casino in Reno, Nevada. The brothers are arrested just as Ron attempts to murder Dan in a bid to become the true "One." Pyre returns home and reconciles with his wife, no longer a believing man but seeing his family as his faith like Allen before him.
Credits
Adapted from Wikipedia contributors, Under the Banner of Heaven (miniseries). Series, exact episode number and English title matched. Paragraphs formatted; references and illustrations omitted.