"The Malleus Maleficarum" by Heinrich Kramer

Published in 1487, "The Malleus Maleficarum," or "The Hammer of Witches," was used to justify and fuel the witch hunts that plagued Europe. This disturbing manual provided guidelines for identifying and persecuting supposed witches, leading to countless executions and suffering. The chilling reality of its impact, combined with its dark intentions, gives it a haunting legacy.