Why would a gun-wielding, tattoo-bearing "homie" trade in la vida loca for a Bible and the buttoned-down lifestyle of an evangelical hermano (brother in Christ)? To answer this question, Robert Brenneman interviewed sixty-three former gang members from the "Northern Triangle" of Central America--Guatemala, El Salvador, and Honduras--most of whom left their gang for evangelicalism. Unlike in the United States, membership in a Central American gang...