The extract is likely named a "Tragedy" because it describes the sudden and violent death of John Douglas, which is a tragic event. Tragedies typically involve the downfall or death of a protagonist or central character, often accompanied by sorrow, loss, and a sense of inevitability. In this extract, the murder of John Douglas is the central event, and it brings about a sense of sadness, shock, and loss to the characters involved, particularly to his wife, Mrs. Douglas, and the community of Birlstone. Additionally, the investigation into the murder and the unraveling of the mystery may further contribute to the tragic tone of the story.
