Across the Shaman’s River is the story of one of Alaska’s last Native American strongholds, a Tlingit community closed off for a century until a fateful encounter between a shaman, a preacher, and John Muir. Tucked in the corner of Southeast Alaska, the Tlingits had successfully warded off the Anglo influences that had swept into other corners of the territory. This tribe was viewed by European and American outsiders as the last wild tribe and a frustrating impediment to access. Missionaries and prospectors alike had widely failed to bring the Tlingit into their power. Yet, when John Muir arrived in 1879, accompanied by a fiery preacher, it only took a speech about “brotherhood”—and some encouragement from the revered local shaman Skandoo’o—to finally transform these “hostile heathens.” Using Muir’s original journal entries, as well as historic writings of explorers juxtaposed with insights from contemporary tribal descendants, Across the Shaman’s River reveals how Muir’s famous canoe journey changed the course of history and had profound consequences on the region’s Native Americans.