Gerald Seymour was born on November 25, 1941 in Guilford, Surrey, England. He received a BA Honors degree in Modern History from University College London. He was a broadcast journalist who covered many overseas conflicts including the Vietnam War, the Munich Olympics massacre, and Palestinian militant groups.
His first book, Harry's Game, was published in 1975 and soon afterwards, he retired from journalism to become a full-time author. Many of his other books were adapted into television movies and Field of Blood was adapted as the feature film, The Informant, starring Timothy Dalton.