Ah, that was more like Shadow Varne!

He parted the bushes and slipped in under the verandah. This was the spot where the old madman had disappeared from view last night. His flashlight was switched on now. It showed a well-defined path, if it could be called a path, where through much usage the earth and gravel had been pressed down close up against the side of the house. It led toward the rear. He followed it. It took him around the corner of the house, and here, under a flight of steps that led to the verandah above, he found himself confronted with a basement door. Captain Francis Newcombe smiled. He had never ranked the task of probing the old fool's actions as one that demanded much ingenuity, or as presenting any particular difficulty. It was simply a question of watching the other without being seen himself; and with the man's mode of exit and entry from and into the house already known, the rest would almost automatically take care of itself.

He opened the door and stepped inside. The flashlight disclosed an ordinary basement storeroom, and, at one side, a flight of stairs. Captain Francis Newcombe moved quickly, but without sound now. He crossed the basement and crept up the stairs. Here, at the top, another door confronted him. With the flashlight out, he opened this door cautiously—and again a smile touched his lips. He had rather expected it! The door opened on the lower hall, and almost directly opposite Mr. Marlin's room.

He stepped across the hall and listened again at the old man's door. There still came from within the sounds of occupancy; but instead now of the regular breathing as of one asleep, it was the sound as of one moving softly around within.

Captain Francis Newcombe retreated to the stairs, closed the door behind him, descended the stairs, left the basement, and selected a spot amongst the trees at the edge of the lawn where he could command a view of the shrubbery bordering the verandah. It was still a little earlier than the hour last night when, according to Polly, Mr. Marlin had gone out, and if, in the bizarre workings of a warped brain, a later hour each night added to secretness and security, Mr. Marlin was not yet to be expected for a little while. Quite so! He, Captain Francis Newcombe, had formulated his own timetable on that basis. There was nothing to do now but wait.

He frowned suddenly. Suppose, though, Mr. Marlin did not come out at all? This might well be one of the nights when— No! He shook his head decisively. To begin with, he had just heard the man moving around in his room after having previously been, or pretended that he had been, asleep; and if Polly's report was based on fact, as it undoubtedly was, the old maniac, once started on his period of peregrinations, kept it up until, on the basis of a later hour each night, his final sortie was made just before daybreak—and taking into account the hour at which the old man had been out last night, Mr. Marlin ought at present to be in the thick of one of those periods of nocturnal activity that would endure for a number of consecutive nights to come.

In a sort of grim mirth, he laughed softly now to himself. One night, not a number of nights, would be all that was required! It did not entail any distressingly laboured mental effort to understand why the old man went out—it was simply a question of where he went.

The minutes dragged along. A quarter of an hour went by; it became half an hour—and then Captain Francis Newcombe drew back silently a little deeper in amongst the trees. Yes, there was the old maniac now, dressing gown and all, and cocking his head to and fro in all directions as he parted the bushes in emerging from under the verandah. A moment later, the old man scurried across the lawn to a spot not far from where he, Captain Francis Newcombe, was standing. The woods here surrounding the house were full of little paths and walks, and the grotesque figure with the flapping gown now disappeared along one of these paths a few yards away.

Captain Francis Newcombe's lips twisted a little ironically as he took up the chase. The head that kept cocking itself around so idiotically would avail its owner little in the shape of protection! Apart from it being too dark to see more than a few feet in any direction now in the wooded path, he, Captain Francis Newcombe, had not the slightest intention of trying to keep the other in sight, much less run any risk of being seen himself. The sense of sound was quite sufficient—entirely adequate! Twigs and dried pine needles snapped eloquently under Mr. Marlin's feet. Captain Francis Newcombe's ironical smile deepened. His own rubber-soled yachting shoes, combined with a little precaution, might be relied upon to cause the old maniac no alarm!

The chase led on, following the turnings and twistings of the path for perhaps three hundred yards, and then turned into a narrow intersecting by-path at the right. Here again Captain Francis Newcombe followed the sound of the other's footsteps for perhaps another hundred yards—and then suddenly he halted. The footsteps had ceased abruptly.