In this chapter, Isabella explains that the ghost of Dr. Onofrio has no guards or backup power in his house. He will be cut off from the outside world at 3 a.m., which means that he will not be able to leave the house until the power is cut off. Isabella also tells us that the house maid will be out of the house by then. She will have to sleep on the back of a chair, which is not a good idea.