Monsieur Lecoq by Emile Gaboriau

Long, narrow, and low of ceiling, having on the one side a row of windows looking on to a small courtyard, and on the other a range of doors, each with a number on its central panel, thus reminding one of some corridor in a second-rate hotel, such is the Galerie d'Instruction at the Palais de Justice whereby admittance is gained into the various rooms occupied by the investigating magistrates. Even in the daytime, when it is thronged with prisoners, witnesses, and guards, it is a sad and gloomy place. But it is absolutely sinister of aspect at nighttime, when deserted, and only dimly lighted by the smoky lamp of a solitary attendant, waiting for the departure of some magistrate whom business has detained later than usual.

Although Lecoq was not sensitive to such influences, he made haste to reach the staircase and thus escape the echo of his footsteps, which sounded most drearily in the silence and darkness pervading the gallery.