This thesis examines the Sherlock Holmes stories written by Sir Arthur Conan Doyle and how they relate to the late-Victorian Sensation Novel. First, a brief introduction to the Sensation novel is made. It makes a study the character of Sherlock Holmes, his habits, and his cases to show the sensationalism of his character. It considers the setting of late-Victorian England and its connections to the world created by Conan Doyle. Finally, it takes into account the significance of Victorian class structure within the stories. All these come together to confirm that the Sherlock Holmes stories belonged within the sensation genre. The research materials include critics such as Philip Davis, author of The Victorians, Russell Goldfarb, author of Sexual Repression and Victorian Literature, and Steven Marcus, author of The Other Victorians: A Study of Sexuality and Pornography in Mid-Nineteenth- Century England. Other sources also include the 1898 Poverty Map created by Charles Booth, works by Dr. William Acton, and articles from the Penny Illustrated Paper. These sources help to form conclusions about the Sherlock Holmes stories as sensational stories providing detailed descriptions and examinations of Holmes' character, sexuality, and lifestyle and how they pertian to the Sensation genre. The thesis will also take into account different interpretations of Holmes' character as it has evolved through the 20th and 21st centuries thus far.