In another online 'extra' episode of Most Haunted, Yvette Fielding sends Karl Beattie and Stuart Torevell to investigate the ghosts and grim history of York Castle Museum, a place where many executions were carried out, a place with such a history of bloodshed, pain and death no wonder it is said that some of the long suffering souls of the incarcerated still roam. What will our investigators discover tonight?