"What we're trying to show in the exhibition is that spirits and specters crop up in his writing beyond just the well-known ghost stories," Kubicki says. "It starts with The Pickwick Papers, where they are in a story within a story, as people tell tales about ghosts, while the most references to ghosts crop up in Bleak House, which is about a long-running legal dispute, so it's not actually a ghost story.
"For that reason, it's hard to say exactly how many ghost stories Dickens wrote, but it's probably around 20."