Stanley Harris was a member of the University of South Grimster's parapsychology unit in the mid-20th century, along with John Struther and Margaret Schuman. In October 1955, they investigated the alleged haunting of Comarth Grange by a ghost known as the Old Peddler Woman. That night, Margaret was strangled to death, apparently by the ghost, who was photographed by Stanley.
Fifty years later, in 2005, Stanley returned to Comarth Grange with the cast and crew of the television series Most Horrid to record an episode there. They were interrupted by the arrival of Iris Wildthyme, who revealed that she had been the "ghost"; she had visited the house to borrow milk for her tea, thought Margaret was asleep and was trying to wake her up when the photograph was taken. Now realising what had really happened, Iris dressed up as the ghost and confronted Stanley, who confessed the truth: he had murdered Margaret after he had made a pass at her and she threatened to tell John. (PROSE: Most Horrid)