The narrator informs the reader how every day at midnight he would stand outside of the old man's room, and peek through the key holder on the door knob.
The narrator described how the old men felt when he had heard a slight groan, like if someone was trying to open his door. The old man tried to convince himself that it was just the chimney or the wind blowing.
The narrator describes how he killed the old man and what he did after to hide the body. He dismembered the old man's body and he hid the remaining pieces under the planks.
The narrator says that the two officers told him that some neighbors heard someone scream so they came to make sure that everything was good, so they told him if they could check the house.
The narrator tells the reader that while he was talking to the cops he was hearing the heartbeat of the old men, and that he was starting to get nervous because he thought that the officers could hear it too.