X, Y. Arrows show direction taken by man and woman who passed Joseph in
corridor going out.]

"Excuse me, there was no one in Number Five during that fifteen minutes,
and the party who had engaged Number Seven did not come."

"Ah! Then if any stranger went into Number Six during that fifteen minutes
he must have come from the banquet room?"

"Yes, sir."

"By this door, _B?_"

"That's the only way he could have come without my seeing him."

"And if he went out from Number Six afterwards, I mean if he left the
hotel, he must have passed you in the corridor?"

"Exactly." Joseph's face was brightening.

"Now, _did_ anyone pass you in the corridor, anyone except the lady?"

"Yes, sir," answered the waiter eagerly, "a young man passed me."

"Going out?"

"Yes, sir."

"Did you know where he came from?"