He was the right-hand man of Joan of Arc and the single richest and most powerful nobleman of Anjou. He was a war hero, the Marshall of France. But he has also been described as the most horrific serial killer in French history, a man who inspired the grizzly tale of Bluebeard. In this video we will discuss Gilles de Rais the man who supposedly sold his soul to the Devil and eventually paid the ultimate price.