The document summarizes a children's story about an opossum named Gilbert who is the main character. While Gilbert is not a ghost, he dresses up as a monster for Halloween. The settings of the story include Gilbert's house, a classroom, a bathroom outside, and a Halloween party. True statements include that Gilbert and Frank did not have the same costume and that it was November. Gilbert is seen as brave for dressing up in a costume and attending the Halloween party despite not being a traditional creature that celebrates Halloween.