challenged or their patriarchal, cult-like order defied, these still-active groups, according to Krakauer, are capable of fighting back with tremendous violence. While Krakauer's research into the history of the church is admirably extensive, the real power of the book comes from present-day information, notably jailhouse interviews with Dan Lafferty. Far from being the brooding maniac one might expect, Lafferty is chillingly coherent, still insisting that his motive was merely to obey God's command. Krakauer's accounts of the actual murders are graphic and disturbing, but such detail makes the brothers' claim of divine instruction all the more horrifying. In an age where Westerners have trouble comprehending what drives Islamic fundamentalists to kill, Jon Krakauer advises us to look within America's own borders. --John Moe --This text refers to the Hardcover edition. From Publishers Weekly Using as a focal point the chilling story of offshoot Mormon fundamentalist brothers Dan and Ron Lafferty, who in 1984 brutally butchered their sister-in-law and 15-month-old niece in the name of a divine revelation, Krakauer explores what he sees as the nature of radical Mormon sects with Svengali-like leaders. Using mostly secondary historical texts and some contemporary primary sources, Krakauer compellingly details the history of the Mormon church from its early 19th-century creation by Joseph Smith (whom Krakauer describes as a convicted con man) to its violent journey from upstate New York to the Midwest and finally Utah, where, after the 1890 renunciation of the church's holy doctrine sanctioning multiple marriages, it transformed itself into one of