Marc Morris's new bestseller: the definitive and brilliantly compelling biography of the treacherous and tyrannical King John. Published in the run-up to the 800-year anniversary of Magna Carta and written by a historian at the top of his game.

Marc Morris is a bestselling historian and broadcaster, specialising in the Middle Ages. He studied and taught history at the universities of London and Oxford, and his doctorate on the thirteenth-century earls of Norfolk was published in 2005. In 2003 he presented the highly-acclaimed television series Castle, and wrote its accompanying book. His bestselling biography of Edward I, A Great and Terrible King, was published in 2008, with his widely-acclaimed history, The Norman Conquest, following in 2012.