Chillingham Castle is reputed to be the most haunted castle in Britain. The most famous ghost of the castle is the "blue (or radiant) boy", who according to the owners used to haunt the Pink Room in the castle. Guests supposedly reported seeing blue flashes and a blue "halo" of light above their beds after a loud wail. It is claimed that the hauntings ceased after renovation work revealed the body of a man and a young boy bricked inside a 10-foot-thick wall. The owners also claim that the ghosts of John Sage, a former torturer, and Lady Mary Berkeley, who restlessly searches for her husband who ran off with her sister, haunt the castle.