Barstow has written an engaging and informative book explaining some of the medieval thinking that affected the way in which Joan of Arc was tried. Her chapters on Joan as a heretic and a witch are particularly informative, providing historical context and explaining the gender biases that led to women being accused of witchcraft far more often than men. I skimmed the chapter on Joan as a shaman, as it did not seem to be a particularly helpful way of thinking about her, and the parts I read did not convince me that it was.