Gilles de Rais, a prominent figure in 15th-century France, remains a controversial figure in history. Celebrated as a brave military leader and companion of Joan of Arc, he was later convicted and executed for the horrific crimes. Following his military career, extravagant spending and poor financial decisions led to a rapid decline in his wealth. This period coincided with a shift in behavior, marked by cruelty and a growing obsession with the occult. While many accept his guilt, questions remain about the validity of the evidence and the motivations behind his conviction. Ultimately, the story of Gilles de Rais serves as a chilling reminder of the potential for darkness to reside even within those who seem to embody heroism and virtue.