Witchcraft has been undergoing a huge popular revival, but does modern pagan witchcraft really bear any resemblance to its historical antecedents? This guide explores the historical background to the European witchcraft phenomenon. For both Medieval and Reformation scholars alike the Devil and all his works were a very real threat. Their conviction that witches were the servants of Satan led to the formation of perhaps one of the greatest conspiracy theories of all time: a belief that witches were working in league with the Devil in a diabolical plot against all Christendom. Witches were transformed from poor deluded old women who rode out at night with the pagan goddess Diana into devil-worshipping heretics who became the focus of a centuries-long, Europe-wide campaign determined to seek out and destroy this evil wherever it was to be found, regardless of whether any of its victims were actually guilty or not.