Plot summary
Pyre and backup arrive to help Taba. They arrest Sam Lafferty and he speaks of a list consisting of sinners that need to be cleansed by blood atonement. The list includes several prominent LDS families, and police quickly search for them. Sam's daughter reveals to Pyre that tensions between the brothers and Ammon reached the point of violence when Ammon didn't approve of Dan's extreme views. Pyre consults his bishop about violent teachings in the LDS Church's past, and is told to not question it. Brenda tries to convince Dan to end his anti-tax stance but he refuses.
She then asks Allen to distance himself from his brothers, to which he agrees only if she puts off her career to have children. Allen says he now realizes he was putting Brenda in a cage. Robin discovers Brenda and his niece were murdered and tearfully insists he had nothing to do with it.
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.