Britton wrote three published novels. He made a publishing deal for his first book
The American when he was 23. He followed this with his novel
The Assassin. In early 2007 Britton returned to Camlough, Northern Ireland to complete the third novel of the
Ryan Kealy espionage series
The Invisible which was released only three weeks before his early death. Britton's books appeared on the
New York Times bestseller list and were translated into several languages becoming bestsellers worldwide. Britton, an avid researcher and writer, left behind many manuscripts and his work will continue to be published.
- The American (2007)
- The Assassin (2008)
- The Invisible (2009)
- The Exile (July 1, 2010)