GRAHAM HANCOCK is the author of the major international bestsellers The Sign and The Seal, Fingerprints of the Gods and 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 Civilisation, have put his ideas before audiences of tens of millions. He has become recognised as an unconventional thinker who raises legitimate questions about humanity's history and prehistory and offers an increasingly popular challenge to the entrenched views of orthodox scholars.

Born in Edinburgh, Scotland, Hancock's early years were spent in India, where his father worked as a surgeon. Later he went to school and university in the northern English city of Durham and graduated from Durham University in 1973 with First Class Honours in Sociology. He went on to pursue a career in quality journalism, writing for many of Britain's leading newspapers including The Times, The Sunday Times, The Independent, and The Guardian. He was co-editor of New Internationalist magazine from 1976-1979 and East Africa correspondent of The Economist from 1981-1983.

In the early 1980's Hancock's writing began to move consistently in the direction of books. His first book (Journey Through Pakistan, with photographers Mohamed Amin and Duncan Willetts) was published in 1981. It was followed by Under Ethiopian Skies (1983), Ethiopia: The Challenge of Hunger (1984), and AIDS: The Deadly Epidemic (1986). In 1987 Hancock began work on his widely-acclaimed critique of foreign aid, Lords of Poverty, which was published in 1989. African Ark (with photographers Angela Fisher and Carol Beckwith) was published in 1990.

Hancock's breakthrough to bestseller status came in 1992 with the publication of The Sign and The Seal, his epic investigation into the mystique and whereabouts today of the lost Ark of the Covenant. 'Hancock has invented a new genre,' commented The Guardian, 'an intellectual whodunit by a do-it-yourself sleuth.' Fingerprints of the Gods, published in 1995 confirmed Hancock's growing reputation. Described as 'one of the intellectual landmarks of the decade' by the Literary Review, this book has now sold more than three million copies and continues to be in demand all around the world. Subsequent works such as Keeper Of Genesis (The Message of the Sphinx in the US) with co-author Robert Bauval, and Heaven's Mirror, with photographer Santha Faiia, have also been Number 1 bestsellers, the latter accompanied by Hancock's three-part television series Quest For the Lost Civilisation.

With Santha Faiia, Hancock is now involved in the preparation of a major new book and TV series, tentatively titled Underworld: A Quest for the City of Below. It's a worldwide diving adventure, looking for underwater ruins all around the globe - the ultimate proof of the existence of a lost civilisation more than 12,000 years ago.