Dan Jones is the author of The Plantagenets: The Warrior Kings and Queens Who Built England, which was a #1 international bestseller and a New York Times bestseller, as well as Wars of the Roses, which chronicles the Plantagenets' fall and the Tudors' unlikely ascent, Magna Carta: The Birth of Liberty, and Summer of Blood: England's First Revolution. He starred alongside George R.R. Martin in the Netflix series Secrets of Great British Castles, which he wrote and presented. Martin appears in the HBO documentary that delves into the true origins of Game of Thrones. Knightfall, an A&E drama about the Templars, used him as a historical adviser.