"But it was a very hot night. People sat up late, with all their windows open, and caretakers in particular must have been sitting on the steps, some one must have seen you return."
"Perhaps they did."
"Did you, yourself, notice no one whom we can summon as a witness to your return?"
"No one."
"What did you do when you came in?"
"I went to bed."
"You do not sleep in the same room with your mother?"
"No."
"On the same floor?"
"Yes."