Now a major new series on Disney+ starring Andrew Garfield A provocative look at the twisted roots of American fundamentalism.' Will Self, Evening Standard Books of the Year ‘Excellent . . . a lucid, judicious, even sympathetic account not just of Mormon Fundamentalism but of the seductive power of fanaticism in general.’ Daily Telegraph ‘Remarkable . . . for anyone interested in the wilder frontiers of spiritual conviction, this book is a must.’ Independent Brothers Ron and Dan Lafferty insist they were commanded to kill by God. In Under The Banner of Heaven, Jon Krakauer's investigation is a meticulously researched, bone-chilling narrative of polygamy, savage violence and unyielding an incisive look inside isolated Mormon Fundamentalist communities in America, this gripping work of non-fiction illuminates an otherwise confounding realm of human behaviour.