The man had a plan to kill the old man for the eye.
The old man would consider the man like is own son.
One night the man almost lost his cover because of a cat that was on the stairs on his way to see the old man sleep.
The 8th night the man was ready to kill the old man,the old man was scared he didn't know what to do.The old man was killed by the bed. The man took the three planks from the floor and put the man inside the floor.
Three police man came to the chamber of the old man and searched the whole chamber and the man brought chairs to sit with the police he put his chair under the body he heard a noise he had a head ache,he confronted to the police that he killed the old man.