One possible theme could be loss. The ghost could symbolize something that has been lost, like a person, a relationship, or a part of oneself.
The theme of fear is also likely. Ghosts are often associated with fear in literature. In Matthew Dickman's story, the fear of the unknown that the ghost represents could be a central theme. This fear could drive the characters' actions and decisions. It could also make them question their beliefs and sanity. Moreover, the theme of redemption could be present. Maybe the ghost is there to give the characters a chance to make amends for something they did wrong in the past, or to find a way to move forward from a difficult situation.
I'm not sure specifically which 'Matthew Dickman Ghost Story' you are referring to. There could be many stories by Matthew Dickman that involve ghosts. He might use ghosts as a metaphor for something deeper like memories or emotions in his works.
Another theme could be the celebration of faith. If Matthew is religious, his Christmas story could revolve around the religious significance of Christmas, such as attending church services, praying, and reflecting on the birth of Jesus. This would add a spiritual dimension to his Christmas story.
One possible theme could be perseverance. Given his long career in Hollywood, his story might touch on how he persevered through tough times in the industry.
One possible theme could be self - discovery. As they fall in love, both Amy and Matthew might discover new sides of themselves. Another theme could be the power of connection. Their relationship might show how two people can form a strong bond.
A theme of hope could also be present. Maybe his Christmas story is about how, even in difficult times, the Christmas season brought a sense of hope and renewal. It could be about looking forward to a better year ahead, with the Christmas celebration as a symbol of that hope.
One possible theme could be mystery. Since there is a ghost involved, there would be a sense of the unknown and the fishboy trying to solve the mystery of the ghost. Another theme could be connection. Maybe the fishboy discovers a connection between the ghost, himself and the fish or the water.
One possible theme could be revenge. If Muriel was wronged in some way during her life, her ghost might be seeking revenge in the story.
Another theme could be fear. Ghost stories are often about creating fear, and in '222 the ghost story', the unknown elements related to '222' might be used to instill fear in the readers or listeners. For example, if the ghost always haunts at 2:22, that specific time can be a source of fear. Also, the presence of the ghost in the story would naturally bring a sense of dread and unease.
One possible theme could be displacement. The idea of being uprooted from one's home and becoming a refugee, like a ghost floating without a place to belong.
One possible theme could be the transition from a life of military combat to a pursuit of the supernatural. Another theme might be the exploration of the unknown, as the soldier leaves behind the familiar world of the military to face the mysteries of ghosts.