Poe's character, the detective C.August 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 River Seine and the media take 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…