Edgar Allan Poe's contributions to literary form can hardly be overstated. Among many accomplishments, he is widely regarded as the progenitor of the detective story. His character, C. Auguste Dupin first appeared in 1841's "Murders in the Rue Morgue" and returned the following year for "The Mystery of Marie Roget" and again in 1844's "The Purloined Letter". These three stories had an enormous impact on the development of mystery and the evolution of crime fiction, influencing many writers and artists. Perhaps chief among these was Sir Arthur Conan Doyle. In this episode, Josh and Scott reflect upon Poe's three 19th Century tales of "ratiocination".