But could he obtain admission? He examined the sashes. They were of steel, hinged and opening inwards in the French manner, and were fastened by a handle which could not be turned from without. Had they been the ordinary English sashes fastened with snibs he would have had the window open in a few seconds, but with these he could do nothing.

He moved round the house examining the other windows. All were fitted with the same type of sash, and all were fastened. The front door also was shut, and though he might have been able to open it with his bent wire, he felt that to adventure himself into the hall without any idea of the interior would be too dangerous. Here, as always, he was hampered by the fact that discovery would mean the ruin of his case.

Having completed the circuit of the building, he looked once more through the study window. At once he saw that his opportunity was gone. At the large desk sat Archer busily writing.

Various expedients to obtain admission to the house passed through his brain, all to be rejected as impracticable. Unless some unexpected incident occurred of which he could take advantage, he began to fear he would be unable to accomplish his plan.

As by this time it was half past eight, he withdrew from the window and took up his position behind a neighboring shrub. He did not wish to be seen by Beamish, should the latter come early to the rendezvous.

He had, however, to wait for more than half an hour before a dark form became vaguely visible in the faint light which shone through the study blinds. It approached the window, and a tap sounded on the glass. In a moment the blind went up, the sash opened, the figure passed through, the sash closed softly, and the blind was once more drawn down. In three seconds Willis was back at the sill.

The slot under the blind still remained, the other window having been opened. Willis first examined the fastening of the latter in the hope of opening the sash enough to hear what was said, but to his disappointment he found it tightly closed. He had therefore to be content with observation through the slot.

He watched the two men sit down at either side of the fire, and light cigars. Then Beamish handed the other a paper, presumably Madeleine’s letter. Archer having read it twice, a discussion began. At first Archer seemed to be making some statement, to judge by the other’s rapt attention and the gestures of excitement or concern which he made. But no word of the conversation reached the inspector’s ears.

He watched for nearly two hours, getting gradually more and more cramped from his stooping position, and chilled by the sharp autumn air. During all that time the men talked earnestly, then, shortly after eleven, they got up and approached the window. Willis retreated quickly behind his bush.

The window opened softly and Beamish stepped out to the grass, the light shining on his strong, rather lowering face. Archer leaned out of the window after him, and Willis heard him say in low tones, “Then you’ll speak up at eleven?” to which the other nodded and silently withdrew. The window closed, the blind was lowered, and all remained silent.