This is the first complete and accessible English translation of two major source texts—Tinctor’s Invectives and the anonymous Recollectio—that arose from the notorious Arras witch hunts and trials in the mid-fifteenth century in France. These writings, by the “Anonymous of Arras” (believed to be the trial judge Jacques du Bois) and the intellectual Johannes Tinctor, offer valuable eyewitness perspectives on one of the very first mass trials and persecutions of alleged witches in European history. More importantly, they provide a window onto the early development of witchcraft theory and demonology in western Europe during the late medieval period—an entire generation before the infamous Witches’ Hammer appeared.