Poe's character, the detective C.August Dupin and his sidekick the unnamed narrator undertake the unsolved murder of Marie Roget in Paris. The body of Roget, 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 "e;create a sensation... rather than to further the cause of truth."e; 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...