The paper you're likely referring to is titled (often cited with focus on its "mysterious" or sensational case studies).
While the phrasing "10 : Mysterious Affair" isn't the primary title, the research is highly regarded for its deep dive into Victorian sensationalism. The thesis and subsequent academic articles analyze how the Illustrated Police News captivated 19th-century readers with "mysterious affairs" and dramatic crime illustrations. Key Highlights from the Study:
: The study tracks these themes across 74 years , showing how the public's appetite for mystery remained constant even as journalism evolved. A Study of the Illustrated Police News, 1864-1938
