Later in their journey, Fortunato makes a hand movement that is a secret sign of the Masons, an exclusive fraternal organization. Montresor does not recognize this hand signal, though he claims that he is a Mason. When Fortunato asks for proof, Montresor shows him his trowel, the implication being that Montresor is an actual stonemason. Fortunato says that he must be jesting, and the two men continue onward. The men walk into a crypt, where human bones decorate three of the four walls. The bones from the fourth wall have been thrown down on the ground. On the exposed wall is a small recess, where Montresor tells Fortunato that the Amontillado is being stored. Fortunato, now heavily intoxicated, goes to the back of the recess. Montresor then suddenly chains the slow-footed Fortunato to a stone. 

Taunting Fortunato with an offer to leave, Montresor begins to wall up the entrance to this small crypt, thereby trapping Fortunato inside. Fortunato screams confusedly as Montresor builds the first layer of the wall. The alcohol soon wears off and Fortunato moans, terrified and helpless. As the layers continue to rise, though, Fortunato falls silent. Just as Montresor is about to finish, Fortunato laughs as if Montresor is playing a joke on him, but Montresor is not joking. At last, after a final plea, “For the love of God, Montresor!” Fortunato stops answering Montresor, who then twice calls out his enemy’s name. After no response, Montresor claims that his heart feels sick because of the dampness of the catacombs. He fits the last stone into place and plasters the wall closed, his actions accompanied only by the jingling of Fortunato’s bells. He finally repositions the bones on the fourth wall. For fifty years, he writes, no one has disturbed them. He concludes with a Latin phrase meaning “May he rest in peace.”