Joan of Navarre was the richest woman in the land, at a time when war-torn England was penniless.
Eleanor Cobham was the wife of a weak king's uncle - and her husband was about to fall from grace.
Jacquetta Woodville was a personal enemy of Warwick the Kingmaker, who was about to take his revenge.
Elizabeth Woodville was the widowed mother of a child king, fighting Richard III for her children's lives.
In Royal Witches, Gemma Hollman explores the lives of these four unique women, looking at how rumours of witchcraft brought them to their knees in a time when superstition and suspicion was rife.