Montresor tells the story of the night that he took his revenge on Fortunato, a fellow nobleman. Angry over some unspecified insult, he plots to murder his friend during Carnival when the man is drunk, dizzy, and wearing a jester's motley.

He baits Fortunato by telling him he has obtained what he believes to be a pipe (about 130 gallons) of Amontillado, a rare and valuable sherry wine. He claims he wants his friend's expert opinion on the subject. Fortunato goes with Montresor to the wine cellars of the latter's palazzo, where they wander in the catacombs. Montresor offers De Grave, a wine, to Fortunato; at one point, Fortunato makes an elaborate and—to the narrator's eyes—grotesque gesture with an upraised wine bottle. When Montresor appears not to recognize the gesture, Fortunato asks, "You are not of the masons?" Montresor says he is, and when Fortunato, disbelieving, requests a sign, Montresor displays a trowel he had been hiding.

Montresor warns Fortunato, who has a bad cough, of the damp, and suggests they go back; Fortunato insists on continuing, claiming that "[he] shall not die of a cough." During their walk, Montresor mentions his family coat of arms: a foot in a blue background crushing a snake whose fangs are embedded in the foot's heel, with the motto Nemo me impune lacessit (No one attacks me with impunity). When they come to a niche, Montresor tells his victim that the Amontillado is within. Fortunato enters and, drunk and unsuspecting, does not resist as Montresor quickly chains him to the wall. Montresor then declares that, since Fortunato won't go back, he must "positively leave [him]."

Montresor walls up the niche, entombing his friend alive. At first, Fortunato, who recovers from his drunken state faster than Montresor anticipated he would, shakes the chains, trying to escape. The narrator stops working for a while so he can enjoy the sound. Fortunato then screams for help, but Montresor mocks his cries, knowing nobody can hear them. Fortunato laughs weakly and tries to pretend that he is the subject of a joke and that people will be waiting for him (including the Lady Fortunato). As the murderer finishes the topmost row of stones, Fortunato wails "For the love of God, Montresor!" Montresor replies, "Yes, for the love of God!" He listens for a reply but hears only the jester's bells ringing. Before placing the last stone, he drops a burning torch through the gap. He claims that he feels sick at heart, but dismisses this reaction as an effect of the dampness of the catacombs.

In the last few sentences, Montresor reveals that it has been 50 years since the murder, he has never been caught, and Fortunato's body still hangs from its chains in the niche where he left it. The murderer, seemingly unrepentant, ends the story by remarking: In pace requiescat (may he rest in peace).

Edgar Allan Poe (January 19, 1809 – October 7, 1849) was an American writer, poet, editor and literary critic, considered part of the American Romantic Movement. Best known for his tales of mystery and the macabre, Poe was one of the earliest American practitioners of the short story and is considered the inventor of the detective-fiction genre. He is further credited with contributing to the emerging genre of science fiction. He was the first well-known American writer to try to earn a living through writing alone, resulting in a financially difficult life and career.

He was born as Edgar Poe in Boston, Massachusetts; he was orphaned young when his mother died shortly after his father abandoned the family. Poe was taken in by John and Frances Allan, of Richmond, Virginia, but they never formally adopted him. He attended the University of Virginia for one semester but left due to lack of money. After enlisting in the Army and later failing as an officer's cadet at West Point, Poe parted ways with the Allans. Poe's publishing career began humbly, with an anonymous collection of poems, Tamerlane and Other Poems (1827), credited only to "a Bostonian".

Poe switched his focus to prose and spent the next several years working for literary journals and periodicals, becoming known for his own style of literary criticism. His work forced him to move between several cities, including Baltimore, Philadelphia, and New York City. In Baltimore in 1835, he married Virginia Clemm, his 13-year-old cousin. In January 1845, Poe published his poem "The Raven" to instant success. His wife died of tuberculosis two years later. He began planning to produce his own journal, The Penn (later renamed The Stylus), though he died before it could be produced. On October 7, 1849, at age 40, Poe died in Baltimore; the cause of his death is unknown and has been variously attributed to alcohol, brain congestion, cholera, drugs, heart disease, rabies, suicide, tuberculosis, and other agents.

Poe and his works influenced literature in the United States and around the world, as well as in specialized fields, such as cosmology and cryptography. Poe and his work appear throughout popular culture in literature, music, films, and television. A number of his homes are dedicated museums today.