Re-locking the door, Mr. Paxton once more composed himself to rest, and again sleep came to him almost in the instant that he sought it. And for the second time he was aroused by a sound so faint that it would hardly have penetrated to the average sleeper's senses. On this occasion the interruption was unexpected. He turned himself slightly in bed, so that he might be in a better position for listening.

"What's that? If it's my friend of the smoking-room again, he's a persevering man. It doesn't sound as if it were coming from the door; it sounds more as if it were coming from the window--and, by George, it is! What does it mean? It occurs to me that this is a case in which it might be advisable that I should make personal inquiries."

Slipping out of bed, Mr. Paxton thrust his legs into a pair of trousers. He took a revolver from underneath his pillow.

"It's lucky," he said to himself, as his fingers closed upon the weapon, "that my prophetic soul told me that this was a plaything which might be likely to come in handy."

In his bare feet he moved towards the window, holding the revolver in his hand.

The room was in darkness, but Mr. Paxton was aware that in front of the window stood the dressing-table. He knew also that the window itself was screened, not only by the blind, but by a pair of heavy curtains. Placing himself by the side of the dressing-table, he gingerly moved one of the curtains, with a view of ascertaining if his doing so would enable him to see what was going on without. One thing the movement of the curtains did reveal to him, that there was a dense fog out of doors. The blind did not quite fit the window, and enough space was left at the side to show that the lights in the King's Road were veiled by a thick white mist. Mr. Paxton moved both the blind and the curtain sufficiently aside to enable him to see all that there was to be seen, without, however, unnecessarily exposing himself.

For a moment or so that all was nothing. Then, gradually becoming accustomed to the light, or want of it, he saw something which, while little enough in itself, was yet sufficient to have given a nervous person a considerable shock. Something outside seemed to reach from top to bottom of the window. At first Mr. Paxton could not make out what it was. Then he understood.

"A ladder--by George, it is! It would almost seem as if my friend of the smoking-room had given his friends outside the 'office,' and that they are taking advantage of the fog to endeavor to succeed where he has failed. If I had expected this kind of thing, I should have preferred to sleep a little nearer to the sky. Instead of the first floor, it should have been the third, or even the fourth, beyond the reach of ladders. Messrs. Lawrence and Co. seem resolved to beat the iron while it's hot. The hunt becomes distinctly keen. It is perhaps only natural to expect that they should be anxious; but, so far as I am concerned, a little of this sort of thing suffices. They are slow at getting to work, considering how awkward they might find it if some one were to come along and twig that ladder. Hallo, the fun begins! Unless my ears deceive me, some one's coming now."

Mr. Paxton's ears did not deceive him. Even as he spoke a dark something appeared on the ladder above the level of the window. It was a man's head. The head was quickly followed by a body. The acute vision of the unseen watcher could dimly make out, against the white background of fog, the faint outline of a man's figure. This figure did an unexpected thing. Without any sort of warning, the shutter of a dark lantern was suddenly opened, and the light thrown on the window in such a way that it shone full into Mr. Paxton's eyes. That gentleman retained his presence of mind. He withdrew his head, while keeping his hold on the blind; if he had let it go the movement could scarcely have failed to have been perceived.

The light vanished almost as quickly as it came. It was followed by a darkness which seemed even denser than before. It was a second or two before Mr. Paxton could adapt his dazzled eyes to the restoration of the blackness. When he did so, he perceived that the man on the ladder was leaning over towards the window. If the lantern had been flashed on him just then, it would have been seen that an ugly look was on Mr. Paxton's countenance.