"You are at home," said he. "Remain here, fasten the door inside, and open it to nobody unless you hear three taps like this;" and he tapped thrice—two taps close together and pretty hard, the other after an interval, and lighter.
"That is well," said Mme. Bonacieux. "Now, in my turn, let me give you my instructions."
"I am all attention."
"Present yourself at the wicket of the Louvre, on the side of the Rue de l'Echelle, and ask for Germain."