Throughout the day, the narrator seems normal and kind; he shows no evil intent. He begins by informing readers of his unnamed disease and how it has “sharpened [his] senses – not destroyed – not dulled them." While readers are unaware of any type of disease that would improve the senses, the narrator elaborates and discusses his acuity in hearing. The narrator attempts to convince readers that he is not mad, saying “I was never kinder to the old man than during the whole week before I killed him." He then goes on to explain how “every morning, when the day broke… [he] spoke courageously to [the old man], calling him by name in a hearty tone, and inquiring how he passed the night." His daytime psyche is so believable, he even convinced the police of his sanity, stating “the officers were satisfied. My manner had convinced them." However, the good in his psyche, only displayed during the daytime, considerably changes as the sun sets.
As night falls and darkness ensues, the narrator’s psyche takes a more evil turn. Readers are lead to believe that his kindness only occurs during the day because he explains that “every night, about midnight” he watches as the old man sleeps, plotting his death. The narrator’s attempts to prove his saneness verify his