| Distinguishing Elements in Poe's Works | "Purloined Letter" | "The Murders of the Rue Morgue" | "The Mystery of Marie Rogêt |
| Analyization vs. Calculation | Yes - How Dupin solves crime | Yes - how Dupin solves crime (and discussed in intro) | Yes - solution / police methods |
| Analytical Detective Beyond Comprehension of Masses | Dupin | Dupin | Dupin |
| Equally Analytical Criminal | Minister D | No - accident (orangutang) | No – failed cover-up |
| Detective's Sidekick (of typical intelligence) | Dupin's friend (narrator) | Dupin's friend (narrator) | Dupin's friend (narrator) |
| Otbuse Police Officer | Monsiuer G, Paris Prefect | Monsieur G | Monsieur G |
| Mathetmatical (Calculative) Police Force | Yes (Paris police) | Yes (Paris police) | Yes (Paris police) / The Media |
| Insanity | No | Dupin – irregularities of mind (possibly just eccentric) | No |
| The Supernatural | No | No | No |
| Crime Presented as Grotesque | No | Yes (body up chimney; mutilated body) | No |
| Pretence of Anonimity | Yes – G--- and D--- | Yes - G--- and witholding Dupin's address | G-- and details of solution |
| Genre Classification | Detective | Detective | Detective |
| Date of Publification | 1844 | 1843 | Three Parts: 11/42 - 2/43 |