He uncovers clues that lead him to travel to the depths of the Amazon rainforest to drink the powerful plant hallucinogen Ayahuasca with Indian shamans, whose paintings contain images of "supernatural beings" identical to the animal-human hybrids depicted in prehistoric caves and rock shelters.

Graham Hancock is the author of the major international bestsellers The Sign and The Seal, Fingerprints of the Godsand Heaven's Mirror. His books have sold more than five million copies worldwide and have been translated into 27 languages. His public lectures and TV appearances, including the three-hour series Quest For The Lost Civilization, have put his ideas before audiences of tens of millions. He has become recognized as an unconventional thinker who raises legitimate questions about humanity's history and prehistory and offers an increasingly popular view of our shared history.