http://www.randomhouse.com/features/krakauer/


UNDER THE BANNER OF HEAVEN, he shifts his focus to extremes of
religious belief within our own borders.
At the core of his book is an appalling double murder committed by two
Mormon Fundamentalist brothers, Ron and Dan Lafferty, who insist they
received a revelation from God commanding them to kill their blameless
victims.

Beginning with a meticulously researched account of this "divinely
inspired" crime, Krakauer constructs a multilayered, bone-chilling
narrative of messianic delusion, savage violence, polygamy, and
unyielding faith. Along the way, he uncovers a shadowy offshoot of
America's fastest-growing religion, and raises provocative questions
about the nature of religious belief.