Every night for a week, he watched the old man sleep. The old man had an eye that bothered him, so his solution was to kill him one night, but only when his eyes were open.
The old man finally opened his eyes, it made the man angry and so he killed him. The old man shrieked in pain.
He cuts off the old mans arms and legs, and hides the body under the floor board. Then he heard a knock at his door...
It was the cops, the neighbors had heard the shriek and called. He told them that it was him, just a nightmare. Then he invited them and told them that the old man was out of the country for awhile.
After talking for a little while with the police, he thought he heard the old mans heartbeat. He was sitting on the chair right above the floorboard where the body was. His guilt was eating him alive.