This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book examines the experience of and attitudes towards witchcraft from both above and below, in an age when the beliefs and 'worldview' of the 'elite' and the 'people' are often thought to have irrevocably pulled away from one another. It suggests that in Sweden and the Netherlands, as in England, the ecclesiastical courts had given up on dealing with popular magic by the early eighteenth century. The book highlights the significant role the Italian Inquisition continued to play in policing 'superstition' during the period. It describes that the parish minister was instrumental in bringing charges against her for practising magic. The book shows that Benito Feijoo's unmasking of the fraud and delusion involved did not lead him to reject completely that some people, albeit a very small number, were truly possessed.