Book excerpt: Now in its fourth edition, Sexuality in Medieval Europe provides a lively account of a society whose attitudes toward sexuality both were ancestral to, and differed from, contemporary ones. The volume is structured not by types of sexual interactions or deviance, but to reflect the difference in gendered experiences when sex is seen as an act one person does to another. Sexual activity, within and outside of marriage, as well as sexual inactivity, had different meanings based on gender, social status, religious affiliation, and more. This book considers these iterations of medieval sexuality in its effort to show there was no single medieval attitude towards sexuality. With an emphasis on Christian Western Europe over the entire course of the Middle Ages, it also includes comparative material on neighboring cultures at the time. Alongside being reworked for further clarity and readability, the fourth edition offers substantial new material on trans scholarship and methodological attempts to recoup a trans past; changes in the treatment of sex work and its terminology; and new material on Byzantine and Muslim culture. Sexuality in Medieval Europe is an essential resource for all those who study medieval history, medieval culture, and the history of sexuality in Europe.