"How do you know?"

"Because I saw the other man, later, coming out of room B."

"This room?"

"Yes."

"You are sure of that?"

"Perfectly."

"Did he see you?"'

"I think not. I was standing right at the corner of the two halls. The
man came out and glanced around, but I stepped back quickly, because we
do not like to appear to spy upon our guests. He did not see me."

"What did he do?"

"He went out the front way. I supposed the lady went with him, for I was
sure that I heard the rustling of her dress."

"Where was Corbut then?"

"In room A."

"How long did he stay there?"