“Why, about fifteen or eighteen days ago.”

“Exactly so.”

“And yesterday evening he came again.”

“Yesterday evening?”

“Yes, just before you came.”

“My dear Athos, we are enveloped in a network of spies. And do you believe he knew you again, Kitty?”

“I pulled down my hood as soon as I saw him, but perhaps it was too late.”

“Go down, Athos—he mistrusts you less than me—and see if he be still at his door.”

Athos went down and returned immediately.

“He has gone,” said he, “and the house door is shut.”