Very few minutes elapsed before we heard a noise in the corridor outside. The key was turned and the door flung open. The manager himself stood in the doorway.

“The man⁠—you have got him?” I cried.

“No, monsieur. No one has descended.”

“You must have passed him.”

“We have passed no one, monsieur. It is incredible that he can have escaped.”

“You have passed someone, I think,” said Poirot, in his gentle voice. “One of the hotel staff, perhaps?”

“Only a waiter carrying a tray, monsieur.”

“Ah!” said Poirot, in a tone that spoke infinities.

“So that was why he wore his overcoat buttoned up to his chin,” mused Poirot, when we had finally got rid of the excited hotel officials.