“Was the hall dark?”
“Very.”
“Darker than usual?”
“Yes, much.”
“How was that? What had happened?”
“The electric light usually kept burning at my end of the hall had been switched off.”
“When? Before your cousin came up or after?”
“I do not know. It simply was not burning when I opened my door.”
“Will you say from which of the doors in your suite you were looking?”
“From the one marked C on the chart.”