Helen Castor is an acclaimed medieval and Tudor historian. Her books include the prize-winning Blood & Roses, She-Wolves: The Women Who Ruled England before Elizabeth, and Joan of Arc, dubbed ‘a triumph of history’. She has presented a range of radio and television programmes for the BBC and Channel 4, including documentaries based on She-Wolves and Joan of Arc. She is a Fellow of the Royal Society of Literature and a Fellow Commoner of Sidney Sussex College, Cambridge, and was a judge for the 2022 Booker Prize. She has one son, and lives in London.