"This, I take it, belongs to the room in which you used to sleep, the centre one to your sister's, and the one next to the main building to Dr. Roylott's chamber?"

"Exactly so. But I am now sleeping in the middle one."

"Pending the alterations, as I understand. By the way, there does not seem to be any very pressing need for repairs at that end wall."

"There were none. I believe that it was an excuse to move me from my room."

"Ah! that is suggestive. Now, on the other side of this narrow wing runs the corridor from which these three rooms open. There are windows in it, of course?"

"Yes, but very small ones. Too narrow for anyone to pass through."