Between 1841 and 1844, Edgar Allan Poe invented the genre of detective fiction with three mesmerizing stories of a young French eccentric named C. Auguste Dupin. Introducing to literature the concept of applying reason to solving crime, these tales brought Poe fame and fortune. "The Murders in the Rue Morgue" is a short story by Edgar Allan Poe published in Graham's Magazine in 1841. It has been claimed as the first detective story; Poe referred to it as one of his "tales of ratiocination." As the first true detective in fiction, the Dupin character established many literary devices which would be used in future 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 Roget," and "The Purloined Letter." "The Mystery of Marie Roget," often subtitled A Sequel to "The Murders in the Rue Morgue" was written in 1842. This is the first murder mystery based on the details of a real crime. It first appeared in Snowden's Ladies' Companion in three installments, November and December 1842 and February 1843. "The Purloined Letter" is the third of his three detective stories featuring the fictional C. Auguste Dupin. These stories are considered to be important early forerunners of the modern detective story. It first appeared in the literary annual The Gift for 1845 (1844) and was soon reprinted in numerous journals and newspapers.