The Murders in the Rue Morgue Poe's Dupin displays many traits which became literary conventions in subsequent fictional detectives, including Sherlock Holmes and Hercule Poirot. Many later characters, for example, follow Poe's model of the brilliant detective, his personal friend who serves as narrator, and the final revelation being presented before the reasoning that leads up to it. Dupin himself reappears in "The Mystery of Marie Rogêt" and "The Purloined Letter". The unnamed narrator of the story opens with a lengthy commentary on the nature and practice of analytical reasoning, then describes the circumstances under which he first met Dupin during an extended visit to Paris.
The Murders in the Rue Morgue brought it back to Paris, but had trouble keeping it under control. When he saw the orangutan attempting to shave its face with his straight razor, imitating his morning grooming, it fled into the streets and reached the Rue Morgue, where it climbed up and into the house. The orangutan seized the mother by the hair and was waving the razor, imitating a barber; when she screamed in fear, it flew into a rage, ripped her hair out, slashed her throat, and strangled the daughter. The sailor climbed up the lightning rod in an attempt to catch the animal, and