This is the story of Margarida de Portu, a medieval French woman accused of poisoning her husband to death. Through the depositions and accusations made in court, the reader learns not only about Margarida herself, but also about medieval women, female agency, kin networks, solidarity, sex, sickness, medicine, and law. Unlike most histories, this compelling book does not remove the author from the analysis. Rather, it lays bare the working method of the historian, helping the reader learn how historians "do" history and discover the rewards and pitfalls of working with primary sources. The book opens with a chapter on microhistory as a genre, explaining its strengths, weaknesses, and inherent risks. It then tells the narrative of Margarida's criminal trial, including chapters on the civil suits, appeal, and Margarida's eventual fate. A map of late medieval Manosque is provided, as well as an example of a court notary's rough copy, a notarial act, a sample folio of a criminal inquest record. A timeline of Margarida?s life, list of characters, and two family trees provide useful information on key people in the story.