The Mystery of Marie Rogêt

Poe's detective character C. Auguste Dupin and his assistant, the unnamed narrator, undertake the unsolved murder of Marie Rogêt in Paris. The body of Rogêt, a perfume shop employee, is found in the Seine, and the press takes a keen interest in the mystery. Dupin remarks that the newspapers "create a sensation ... [rather] than to further the cause of truth". Even so, he uses the newspaper reports to get into the mind of the murderer. Wikipedia