Tom Knox is the pseudonym of British journalist and writer Sean Thomas. His first novel, The Genesis Secret, focuses on the region known as Gobekli Tepe. His second novel, The Marks of Cain was published in 2010 and was concerned with the Basque Country. The front of the US hardcover dust jacket shows the title as Marks of Cain. A third book, titled Bible of the Dead was published in March 2011 and focuses on the Khmer Rouge. Sean Thomas lives in London.
