"Arrested whom?" he asked, with a sharp look I didn't understand.
"My sister."
"Who is that?" This with a smile of indescribable meaning.
"You knew well enough when I was here this afternoon."
"On the contrary, I knew no more than I know now. I don't even know that you have a sister. Have you?"
Either the man was a lunatic, or he knew everything. Here was obviously the reason of the altered reception. But I would not betray myself by a single word or gesture.
"I am speaking of my sister, Olga Petrovitch, whom you rescued from the hands of Major Devinsky. Now, do you know what I mean?"
"No," he answered stolidly.
"Well, do you know whom I mean?"
"I know of Olga Petrovitch."