In "The Tell-Tale Heart, why does the narrator kill the old man?
Simply put, the narrator is crazy. A more developed answer might be, the narrator is unbalanced. Because he thinks he can hear the old man's heart, he thinks others can too. Therefore, he kills the old man to protect himself from being discovered. This can be seen in this passage: " But the beating grew louder, louder! I thought the heart must burst. And now a new anxiety seized me—the sound would be heard by a neighbour!"
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