Neil L. Whitehead is Professor of Anthropology at the University of Wisconsin, Madison. Among his most recent books are Dark Shamans: Kanaimà and the Poetics of Violent Death (published by Duke University Press) and Beyond the Visible and the Material: The Amerindianization of Society in the Work of Peter Rivière (coedited with Laura Rival).

Robin Wright is Associate Professor of Anthropology and Director of the Center for Research in Indigenous Ethnology at the Universidade Estadual de Campinas in Brazil. He is the author of Cosmos, Self, and History in Baniwa Religion: For Those Unborn and the editor of several books in Spanish.