Henry VI came to the throne in exceptionally difficult circumstances. The untimely death of his warlike father, Henry V, placed the crown upon his head aged just 9 months. While England was in the ascendant in the Hundred Years' War in 1422, by the time he came of age his father's French conquests were disintegrating and the English nobility were locked in a dangerous struggle for power. In 1453, Henry suffered a complete mental collapse from which he never fully recovered, and then was used as a chess piece in the bloody Wars of the Roses which swept the country for the next 30 years. Lauren Johnson talks to Dan about the fascinating reign of Henry VI. Producer: Peter Curry