This is a satire by Twain on the mystery novel genre. In the second arc, Sherlock Holmes is depicted in employing scientific methods to a ridiculous degree, yet arriving at a completely wrong assessment. On the other hand, the crime is solved with a supernatural ability that no normal human possesses. Yet even this fails to reveal the whole truth as the final twist of the story indicates. Furthermore, Sam Clemens/Mark Twain poked through the 4th wall and appeared as himself in the middle of the story, supposedly while the story was being serialized, and responded to letters sent in by readers to the newspaper editor. During the exchange, Twain made fun of/self-advertised on some of his other famous short stories.