When the young man went into the old mans house he saw his weird looking eye and that freaked him out.
When the old man went to bed, that's when the young man new that was the perfect time to kill him.
When the young man stepped on a lose board the old man srung up from the bed and said"Who's there." Then the young mn when after him. He cut up the old man and put him body parts under the lose floor board.
While the young man was trying to hide the old man a knock came to the door. The young man went down stairs, opened the door a saw three police officers standing there.
He led the officers to the living room, they sat down and talked. The young man kept hearing this heartbeat he thought it was the old mans. So he kept talking louder and louder till he couldn't do it, then he confessed that he murder the old man.