Lupin opened the envelope. Mrs. Kesselbach implored him to come to her aid. It appeared that two men had taken up their stand under her windows, at night, and one of them had said: "What luck, we've dazzled them completely this time! So it's understood; we shall strike the blow to-night." Mrs. Kesselbach thereupon went downstairs and discovered that the shutter in the pantry did not fasten, or, at least, that it could be opened from the outside. "At last," said Lupin, "it's the enemy himself who offers to give battle. That's a good thing! I am tired of marching up and down under Malreich's windows." "Is he there at this moment?" "No, he played me one of his tricks again in Paris, just as I was about to play him one of mine. But, first of all, listen to me, Doudeville. Go and collect ten of our men and bring them to the Rue des Vignes. Look here, bring Marco and Jérôme, the messenger. I have given them a holiday since the business at the Palace Hotel: let them come this time. Daddy Charolais and his son ought to be mounting guard by now. Make your arrangements with them, and at half-past eleven, come and join me at the corner of the Rue des Vignes and the Rue Raynouard. From there we will watch the house." Doudeville went away. Lupin waited for an hour longer, until that quiet thoroughfare, the Rue Delaizement, was quite deserted, and then, seeing that Leon Massier did not return, he made up his mind and went up to the villa. There was no one in sight. . . . He took a run and jumped on the stone ledge that supported the railings of the garden. A few minutes later, he was inside. His plan was to force the door of the house and search the rooms in order to find the Emperor's letters which Malreich had stolen from Veldenz. But he thought a visit to the coach-house of more immediate importance. He was much surprised to see that it was open and, next, to find, by the light of his electric lantern, that it was absolutely empty and that there was no door in the back wall. He hunted about for a long time, but met with no more success. Outside, however, he saw a ladder standing against the coach-house and obviously serving as a means of reaching a sort of loft contrived under the slate roof. The loft was blocked with old packing-cases, trusses of straw and gardener's frames, or rather it seemed to be blocked, for he very soon discovered a gangway that took him to the wall. Here, he knocked up against a cucumber-frame, which he tried to move. Failing to effect his purpose, he examined the frame more closely and found, first, that it was fixed to the wall and, secondly, that one of the panes was missing. He passed his arm through and encountered space. He cast the bright light of the lantern through the aperture and saw a big shed, a coach-house larger than that of the villa and filled with old iron-work and objects of every kind.