An emotionally cold and arrogant librarian, assigned to catalogue the library of an adventurer apparently killed in a plane crash many years before in the Amazon, eventually travels to the heart of darkness to an appropriate end with a primitive Indian tribe deep in the jungle. The pro-Indian message and the culture clash is laid on a bit thick but the build-up is cleverly handled and the characters, particularly the sister of the explorer and the mysterious Indian with the “snakewrists”, are credible