"I was right," he thought. "This forms the communication.... Let's see if my skeleton-key opens the door of the cellar that belongs to the ground-floor tenant.... Yes, capital.... Now let's examine these wine-bins.... Aha, here are places where the dust has been removed ... and footprints on the floor!..."
A slight sound made him prick up his ears. He quickly closed the door, blew out his candle and hid behind a stack of empty wine-cases. After a few seconds, he noticed that one of the iron bins was turning slowly on a pivot, carrying with it the whole of the piece of wall to which it was fastened. The light of a lantern was thrown into the cellar. An arm appeared. A man entered.
He was bent in two, like a man looking for something. He fumbled in the dust with his finger-tips, and, several times, he straightened himself and threw something into a cardboard box which he carried in his left hand. Next, he removed the marks of his footsteps, as well as those left by Lupin and the blonde lady, and went back to the wine-bin.
He gave a hoarse cry and fell. Shears had leapt upon him. It was the matter of a moment and, in the simplest way possible, the man found himself stretched on the floor, with his ankles fastened together and his wrists bound.
The Englishman stooped over him:
"How much will you take to speak?... To tell what you know?"
The man replied with so sarcastic a smile that Shears understood the futility of his question. He contented himself with exploring his captive's pockets, but his investigations produced nothing more than a bunch of keys, a pocket-handkerchief and the little cardboard box used by the fellow and containing a dozen garnets similar to those which Shears had picked up. A poor booty!
Besides, what was he to do with the man? Wait until his friends came to his assistance and hand them all over to the police? What was the good? What advantage could he derive from it against Lupin?
He was hesitating, when a glance at the box made him come to a decision. It bore the address of Léonard, jeweler, Rue de la Paix.
He resolved simply to leave the man where he was. He pushed back the bin, shut the cellar-door and left the house. He went to a post-office and telegraphed to M. Destange that he could not come until the next day. Then he went on to the jeweler and handed him the garnets: