True crime in the American heartland. Under the Banner of Heaven is a riveting account of Mormon fundamentalism and renegade prophets, from the bestselling author of Into the Wild and Into Thin Air. Now a major TV miniseries starring Andrew Garfield.Brothers Ron and Dan Lafferty insist they were commanded to kill by God. Jon Krakauer's investigation into the murder of a mother and her child is a meticulously researched, bone-chilling narrative of polygamy, savage violence and unyielding faith. An incisive look inside isolated Mormon Fundamentalist communities in America, this gripping work of non-fiction illuminates an otherwise confounding realm of human behaviour.