In this episode of Horrible Humans in History, we explore the chilling crimes of Henri Désiré Landru—the real-life French Bluebeard. A calculating con artist turned serial killer, Landru lured women through lonely hearts ads, promised them love, and then made them disappear without a trace. As France reeled from the horrors of World War I, Landru quietly built a deadly pattern of seduction, fraud, and murder. We'll explore his early life, his transition from petty swindler to cold-blooded killer, and the sensational trial that captivated a nation. Was he a madman, a master manipulator, or simply a product of his time? Let’s find out.