Examine the subtle humour in the narration of the story that lightens the gravity of the subject matter.

The very beginning of the story is an unclear paragraph that looks at a serious matter through comic eyes. Hence, Watson’s narration is itself amusing. Sherlock Holmes interaction with Watson also is characterized by light humour especially when Watson fails to understand what Holmes has already understood like the reference to Scotland Yard. Holmes interaction with other characters is also characterized by a light-heartedness which sometimes even misleads the characters like how Evans was fooled.