"Yes, sir."
"Did you know where he came from?"
"I supposed he came from the banquet room."
"Did this happen before the lady went out, or after?"
"Before."
"Can you describe this young man, Joseph?"
The waiter frowned and rubbed his red neck. "I think I should know him, he was slender and clean shaven—yes, I'm sure I should know him."
"Did anyone else pass you, either going out or coming in?"
"No, sir."
"Are you sure?"