In Darkness and Secrecy brings together ethnographic examinations of Amazonian assault sorcery, witchcraft, and injurious magic, or “dark shamanism.” Anthropological reflections on South American shamanism have tended to emphasize shamans’ healing powers and positive influence. This collection challenges that assumption by showing that dark shamans are, in many Amazonian cultures, quite different from shamanic healers and prophets. Assault sorcery, in particular, involves violence resulting in physical harm or even death. While highlighting the distinctiveness of such practices, In Darkness and Secrecy reveals them as no less relevant to the continuation of culture and society than curing and prophecy. The contributors suggest that the persistence of dark shamanism can be understood as a form of engagement with modernity.