“Are you sure?”
“Certainly. Before I—when I was younger—I traveled in the East, and I know the voice and intonation of the cultured Oriental.”
“Can you place him any closer than that?”
“No, I can't venture to do so.” Brian's manner was becoming, momentarily, more nearly that of a gentleman. “I might be leading you astray if I ventured a guess, but if you asked me to do so, I should say he was a Chinaman.”
“A CHINAMAN?” Dunbar's voice rose excitedly.
“I think so.”
“What occurred next?”
“I turned my cab and drove off out of the Square.”
“Did you see where the man went?”
“I didn't. I saw nothing of him beyond his hand.”