Graham Hancock is a British writer and journalist. His books include Lords of Poverty, The Sign and the Seal, Fingerprints of the Gods, Keeper of Genesis (released in the US as Message of the Sphinx), The Mars Mystery, Heaven's Mirror (with wife Santha Faiia), Underworld: The Mysterious Origins of Civilization, Talisman: Sacred Cities, Secret Faith (with co-author Robert Bauval)and Supernatural: Meeting with the Ancient Teachers of Mankind. He also wrote and presented the Channel 4 documentaries Underworld: Flooded Kingdoms of the Ice Age and Quest for the Lost Civilisation. His first novel, Entangled, was published in 2010.