In "The Cask of Amontillado," Montresor uses verbal manipulations and nonverbal strategies to lure Fortunato to his unfortunate end. Montresor has studied his enemy well and knows his weak points. He has also picked an ideal night for his crime.
Understanding that Fortunato thinks of himself as an expert in wines, Montresor lies and tells Fortunato that he has a rare kind of sherry called amontillado in his wine cellar. He knows this will excite Fortunato's interest. It does, especially when Montresor says he is not sure it is the real thing. Fortunato becomes more and more interested in wanting to go down into the catacombs immediately and taste the amontillado for himself to make a determination. Then, Montresor heightens Fortunato's desires even more when says he will ask Luchesi, a rival, to do the sampling, as Fortunato is busy. Fortunato, who has the vanity to think he is the true expert, eagerly insists he is fully available.
Montresor uses more reverse psychology to trap Fortunato, saying it is too damp down in the catacombs for Fortunato to go there and that nitre, or mold, is growing on the walls. However, the more obstacles Montresor puts in his path, the more Fortunato is determined to head for the catacombs, which is exactly what Montresor wants, despite all his protestations of fake concern for the health of his "friend," such as saying "the vaults are insufferably damp."
By calling him "friend" and flattering him with concern, Montresor causes Fortunato's guard to lower. Fortunato has no reason to suspect that Montresor would do him harm.
Even as they are making their way through the catacombs, Montresor continues to use manipulative verbal reverse psychology and flattery, pretending he has Fortunato's best interest at heart. For example, after Fortunato has a coughing fit, Montresor says,
"Come," I said, with decision, "we will go back; your health is precious. You are rich, respected, admired, beloved."
Yet the more Montresor tries to deter him, the more Fortunato insists on going forward.
An important nonverbal strategy Montresor uses is to pick the night of Carnival, when Fortunato is drinking and partying, to approach him. Fortunato is in a happy space, deep into enjoying the festivities. A second nonverbal strategy Montresor uses is to keep Fortunato drinking as they travel through the catacombs. This way, Fortunato cannot think straight, making it easier for him to miss signs of danger.
A third nonverbal strategy Montresor uses is to wear a black silk face mask. This would be expected during a carnival, but it serves the purpose of hiding any facial expression that might tip Fortunato off to danger.
Montresor has planned his terrible crime well, using the verbal lure of a fine wine, flattery, playing on Fortunato's vanity, reverse psychology, and then, nonverbally, the setting of Carnival, alcohol, and his mask to disguise what he is doing from his enemy and wall him up in the catacombs to perish.