Fortunato comes over to Montresor's house to bring bring him to a party, while already intoxicated. Montresor has been planning his death for a while and decides to put his plan in to action tonight. He then attempts lures Fortunato to the catacombs for some vey special wine.
After not too many tries, Montreser and Fortunato are on there way to the catacombs "The cold is merely nothing, Amontillado". As Montresor says as they descend deeper and deeper into the darkness. (Poe, The Cask of Amontillado, 1846)
As they step onto the bottom floor, and walk around walls as such they are greeted with irritating form of gas. Fortunato starts to cough abundantly and recover a lot longer than usual. "the cough's a mere nothing; it will not kill me, I shall not die of a cough" but, maybe something else said Montresor. (Poe, The Cask of Amontillado, 1846)
As Fortunato slowly but surely comes out of his intoxicated ways of a great measure, Montresor processeds to ask Fortunato for his hand to chain up to put his plan into action "I laid the second tier, and the third, and the fourth; and then I heard the furious vibrations of the chain" (Poe, The Cask of Amontillado, 1846)
Fortunato clearly starts to notice something and snaps completely out of his intoxicated state but, is already chained and Montresor starts to lay the bricks. As Montresor lays down the last bricks, Fortunato starts to laugh and speaks his last words. Montresor soon starts to head to the party, as he finishes the job.
As Montresors walkks upstairs to return to the party, he listens to Fortunato’s last pleases. He ignores them while he walks all the way upstairs and the only hears the receipts of Fortunato's bells. Jingle jingle. Is the last thing he will ever hear from his friend, that he murdered. He shall now live in this guilt for the rest of his life.