In the late 19th and early 20th centuries the classical detective story thrived. Also during these centuries the middle class rose to social prominence. There are many classes of people in our world. While the upper class receives all the luxuries and the lower class receives all the attention, the middle class holds the majority of the people and had the biggest voice in society. Society rises and falls with the middle class. In Sir Arthur Conan Doyle's book "The Sign of Four" the status of the middle class continually comes into the readers mind. Sherlock Holmes, as the main charac…
