D’Artagnan thought this could not last long, and continued to look with all his eyes and listen with all his ears.

He was right; at the end of some seconds two sharp taps were heard inside. The young woman in the street replied by a single tap, and the shutter was opened a little way.

It may be judged whether d’Artagnan looked or listened with avidity. Unfortunately the light had been removed into another chamber; but the eyes of the young man were accustomed to the night. Besides, the eyes of the Gascons have, as it is asserted, like those of cats, the faculty of seeing in the dark.

D’Artagnan then saw that the young woman took from her pocket a white object, which she unfolded quickly, and which took the form of a handkerchief.