This week, we're exploring three of the world's most haunted castles-- and the dark histories that made them that way. At Windsor Castle in England, we'll encounter the ghost og a beheaded king who appears whole. In Austria's Moosham Castle, we explore the only male dominated witch trials. And finally, we visit Himeji Castle in Japan to meet Okiku, the servant girl whose ghost inspired one of the most iconic images in horror.