Chillingham Castle is a medieval castle in the village of Chillingham in the northern part of Northumberland, England. It was the seat of the Grey family and their descendants the Earls of Tankerville from the 13th century until the 1980s. The castle is the most haunted castle in Britain. It has been investigated on television and radio (namely, Most Haunted, I’m Famous and Frightened!, Scariest Places On Earth, Holiday Showdown, Alan Robson’s Nightowls) and now Ghost Hunters International. Some of these ghosts are written about are referred to in a 1925 pamphlet by Leonora, Countess of Tankerville. Others, such as John Sage, are of more recent invention. 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 a man and a young boy inside a 10-foot-thick wall. Documents dating back to the Spanish Armada were also found within the wall. When the bodies were found small marks were found etched into the wall and when the remains of the boy were examined, experts found the tops of his fingers (on his bones) had been worn down. This has led people to believe the boy had scratched at the wall so hard to escape he destroyed his own fingers.