Book excerpt: For Dennis Covington, what began as a journalistic assignment - covering the trial of an Alabama preacher convicted of attempting to murder his wife with poisonous snakes - would evolve into a headlong plunge into a bizarre, mysterious, and ultimately irresistible world of unshakable faith: the world of holiness snake handling, where people drink strychnine, speak in tongues, lay hands on the sick, and, some claim, raise the dead. Set in the heart of Appalachia, Salvation on Sand Mountain is Covington's unsurpassed and chillingly captivating exploration of the nature, power, and extremity of faith - an exploration that gradually turns inward, until Covington finds himself taking up the snakes. University.