A ghostly apparition of a young girl from a photograph. She warns Bob to stay away from the house and shows him a marked tombstone. At the climax, she appears with her mother to save Bob from Dr. Freudstein, leading him to a ghostly realm.
Mae acts as a spectral warning figure who only Bob can perceive.
Mary is revealed as Mae's mother when they appear together in the ghost world.
Explore the full interactive character relationship map of The House by the Cemetery