Kenneth Martin Follett (born 5 June 1949) is a Welsh author of thrillers and historical novels who has sold more than 198 million copies of his works. His books have been sold in over 80 countries. Follett's commercial breakthrough came with the spy thriller Eye of the Needle (1978). After writing more best-sellers in the genre in the 1980s, he branched into historical fiction with The Pillars of the Earth (1989), an epic set in medieval England which became his best-known work and the first published in the Kingsbridge series.
https://en.wikipedia.org/wiki/Ken_Follett