An ancient horror deep in the Amazon jungle spins a web of nightmares to ensnare adventurers, explorers, and their souls, in this skin-crawling Arkham Horror novel of cosmic dread.

Arkham-based investigative reporter Andy van Nortwick has discovered that famed Amazon explorer and film director Maude Brion, missing for the past year while seeking an ancient tribe, is very much alive. But when a rescue mission ventures deep into the jungle in search of her ill-fated expedition, the real reasons for her silence become horrifyingly clear.