Beyond his role as Joan of Arc's steadfast protector and companion on the battlefield, Gilles de Rais is a figure who embodies one of the darkest stories in medieval history. Initially celebrated as a military commander fighting for France, his life took a sinister turn after Joan of Arc's capture and eventual execution. Gilles's fortunes crumbled over a decade during which he engaged in horrific acts that horrified even his contemporaries. Historians have described how Gilles exploited his immense wealth and vast holdings, including numerous castles and surrounding lands, to perpetrate crimes that devastated children and families alike. Dozens of victims were tortured and killed under his orders, making him one of the earliest recorded serial killers in history. His arrest and trial unveiled a grim process where he was shielded for some time by his noble status, but eventually faced justice. The trial, well-documented by historians, revealed the depths of his atrocities and the complete breaking of his life’s former glory. Executed by stake, Gilles de Rais’s story serves as a stark reminder of how power can become corrupted and history can hold both heroes and monsters within its pages. In sharing this darker side of history, it’s important to reflect on how individuals like Gilles were both part of significant historical events and personal tragedies. Their stories, while grim, enrich our understanding of the complexities of past eras and the human capacity for both bravery and horror.