The Purloined Letter

"The Purloined Letter" is a short story by American author Edgar Allan Poe. It is the third of his three detective stories featuring the fictional C. Auguste Dupin, the other two being "The Murders in the Rue Morgue" and "The Mystery of Marie Rogêt". 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 and was soon reprinted in numerous journals and newspapers. The unnamed narrator is discussing with the famous Parisian amateur detective C. Auguste Dupin some of his most celebrated cases... when they are joined by the Prefect of the Police, a man known as G—. The Prefect has a case he would like to discuss with Dupin. A letter has been stolen from the boudoir of an unnamed female by the unscrupulous Minister D—. It is said to contain compromising information. D— was in the room, saw the letter, and switched it for a letter of no importance. He has been blackmailing his victim. The Prefect makes two deductions with which Dupin does not disagree: The Prefect says that he and his police detectives have searched the Ministerial hotel where D— stays and have found nothing.
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