Then he opened the knife, and, cutting the string of the parcel that he had brought in, took from it the dead rat which he had bought at the zoologist’s. Laying the animal on a sheet of paper, he cut off its head, and, holding it up by the tail, allowed the blood that oozed from the neck to drop on the knife, spreading it over both sides of the blade and handle with his finger.

Then he laid the knife on the paper and softly opened the window. From the darkness below came the voice of a cat, apparently perfecting itself in the execution of chromatic Scales; and in that direction Pembury flung the body and head of the rat, and closed the window. Finally, having washed his hands and stuffed the paper from the parcel into the fire-place, he went to bed.

But his proceedings in the morning were equally mysterious. Having breakfasted betimes, he returned to his bedroom and locked himself in. Then he tied his new cane, handle downwards, to the leg of the dressing-table. Next, with the crucible-tongs, he drew the little bottle of musk from the brush-case, and, having assured himself, by sniffing at it, that the exterior was really free from odour, he with drew the rubber cork. Then, slowly and with infinite care, he poured a few drops—perhaps half-a-teaspoonful—of the essence on the cotton-wool that bulged through the hole in the ferrule, watching the absorbent material narrowly as it soaked up the liquid. When it was saturated he proceeded to treat the knife in the same fashion, letting fall a drop of the essence on the wooden handle—which soaked it up readily. This done, he slid up the window and looked out. Immediately below was a tiny yard in which grew, or rather survived, a couple of faded laurel bushes. The body of the rat was nowhere to be seen; it had apparently been spirited away in the night. Holding out the bottle, which he still held, he dropped it into the bushes, flinging the rubber cork after it.

His next proceeding was to take a tube of vaseline from his dressing-bag and squeeze a small quantity onto his fingers. With this he thoroughly smeared the shoulder of the brush case and the inside of the lid, so as to ensure an airtight joint. Having wiped his fingers, he picked the knife up with the crucible-tongs, and, dropping it into the brush-case, immediately pushed on the lid. Then he heated the tips of the tongs in the gas flame to destroy the scent, packed the tongs and brush-case in the bag, untied the cane—carefully avoiding contact with the ferrule—and, taking up the two bags, went out, holding the cane by its middle.

There was no difficulty in finding an empty compartment, for first-class passengers were few at that time in the morning. Pembury waited on the platform until the guard’s whistle sounded, when he stepped into the compartment, shut the door and laid the cane on the seat with its ferrule projecting out of the off-side window, in which position it remained until the train drew up in Baysford station.

Pembury left his dressing-bag at the cloak-room, and, still grasping the cane by its middle, he sallied forth. The town of Baysford lay some half-a-mile to the east of the station; his own house was a mile along the road to the west; and half-way between his house and the station was the residence of General O’Gorman. He knew the place well. Originally a farmhouse, it stood on the edge of a great expanse of flat meadows and communicated with the road by an avenue, nearly three hundred yards long, of ancient trees. The avenue was shut off from the road by a pair of iron gates, but these were merely ornamental, for the place was unenclosed and accessible from the surrounding meadows—indeed, an indistinct footpath crossed the meadows and intersected the avenue about half-way up.

On this occasion Pembury, whose objective was the avenue, elected to approach it by the latter route; and at each stile or fence that he surmounted, he paused to survey the country. Presently the avenue arose before him, lying athwart the narrow track, and, as he entered it between two of the trees, he halted and looked about him.

He stood listening for a while. Beyond the faint rustle of leaves no sound was to be heard. Evidently there was no one about, and, as Pratt was at large, it was probable that the general was absent.

And now Pembury began to examine the adjacent trees with more than a casual interest. The two between which he had entered were respectively an elm and a great pollard oak, the latter being an immense tree whose huge, warty bole divided about seven feet from the ground into three limbs, each as large as a fair-sized tree, of which the largest swept outward in a great curve half-way across the avenue. On this patriarch Pembury bestowed especial attention, walking completely round it and finally laying down his bag and cane (the latter resting on the bag with the ferrule off the ground) that he might climb up, by the aid of the warty outgrowths, to examine the crown; and he had just stepped up into the space between the three limbs, when the creaking of the iron gates was followed by a quick step in the avenue. Hastily he let himself down from the tree, and, gathering up his possessions, stood close behind the great bole.

“Just as well not to be seen,” was his reflection, as he hugged the tree closely and waited, peering cautiously round the trunk. Soon a streak of moving shadow heralded the stranger’s approach, and he moved round to keep the trunk between himself and the intruder. On the footsteps came, until the stranger was abreast of the tree; and when he had passed Pembury peeped round at the retreating figure. It was only the postman, but then the man knew him, and he was glad he had kept out of sight.