This book is based on two remarkable healers of the Upper Amazon-my teachers don Roberto Acho Jurama and dona Maria Luisa Tuesta Flores. The purpose of the book is to try to understand who they are and what they do, by placing them in a series of overlapping contexts-as healers, as shamans, as dwellers in the spiritual world of the Upper Amazon, as traditional practitioners in a modern world, as innovators, as cultural syncretists, and as individuals.