Edgar Allan Poe 
The mistery of Marie Roget [PDF ebook] 

Poe’s detective character C. Auguste Dupin and his sidekick 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 River 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.Dupin uses his skills of ratiocination to determine that a single murderer was involved who dragged her by the cloth belt around her waist before dumping her body off a boat into the river. Finding the boat, Dupin suggests, will lead the police to the murderer.