A choice that could a writer use to quote evidence supporting the statement that Edgar Allan Poe foreshadows the death of Fortunato is The speaker's smile toward Fortunato is fake. "... .he did not perceive that my smile now was at the thought of his immolation."
Montresor in his text gives several shreds of evidence to Fortunato as well as the audience about his motives. Montresor feign his concern towards Fortunato when he coughs violently “We will go back; your health is precious”, “We will go back you will be ill, and I cannot be responsible”
To which Fortunato replies being “a mere nothing” and will not kill him. When Montresor replies "true, true" to Fortunato claiming his awareness regarding his death. Herein, Poe combines verbal irony and foreshadows the suspense through the smile of the speaker.