How was it, then, that by the time the lights began to be lit in the streets I found myself circulating restlessly in the vicinity of the very house I had determined to avoid? Had the exciting incidents of the day been too much for me? It certainly looked so. Surely I had not wandered hither through any act of my own volition or for any definite purpose I could name. Yet now that I had been so led; now that I was within sight of the house where so important an interview was going on, I surely might be pardoned for taking advantage of this proximity to note the doctor when he came out and see, if possible, from his manner and bearing the result of a visit upon which such serious issues hung.
It had threatened storm all day, and during the last few minutes the atmosphere had become permeated with a drizzle which made further tramping over wet pavements undesirable. I therefore looked about for refuge, and perceiving a building in process of construction on the opposite side of the way, I glided amid its shadows, happy both at the protection it offered and the full view it gave me of the Gillespie front door.
That this was the act of one bent on espionage I am ready to acknowledge, but it was espionage undertaken in a good cause and for justifiable reasons. At all events I was engaged in inwardly persuading myself to this effect, when an event occurred which drew my attention from myself and fixed it with renewed interest on the door I was watching.
A boy of whose proximity I had had some previous intimation suddenly darted out from the space behind me, and went flying across the street to the Gillespie house. He had a missive in his hand, and seemed anxious lest he should be caught and stopped.
This roused my curiosity, so that no detail of what followed escaped me. I noted the furtive way in which he thrust the letter into the unwilling hand of the old butler, who answered his frightened ring at the bell. Also the misgiving shake of the head with which the latter received it, and the doubtful looks they both cast at someone back in the hall. Who was this someone, and what lay behind old Hewson's agitated demeanour? The door closed on my curiosity, and I was left to ponder this new event. But not for long; scarcely had my eyes returned from following the escaping figure of the boy, when the door on the opposite side of the street unclosed again and Dr. Bennett came out.
Now, as I have taken pains to say, I had posted myself there in order to note how this gentleman looked on leaving Leighton Gillespie. But now that this opportunity had come, I not only failed to avail myself of it, but found my whole attention caught and my interest fully absorbed by a glimpse I had received of the latter gentleman standing back in the hall reading the letter I had just seen delivered in such a surreptitious manner.
His attitude, the gestures he unconsciously made, argued sudden and overwhelming emotion, an emotion so sudden and overwhelming that he could not conceal it, though he evidently would have been glad to do so, judging from the haste with which he thrust the letter in his pocket and turned—But here the door closed, as frequently happens at critical moments, and I found my eyes resting upon nothing more exciting than the figure of the doctor feeling his way with due care down the damp steps.
Had I not been witness both to the peculiar actions of the urchin who brought this letter, and to the strange manner in which Leighton received it, I might not have considered it decorous to make my presence known to the doctor at a moment and in a place so suggestive of a watch upon his movements. But as everything affecting Leighton was as interesting to this, his best friend, as it was to me, I crossed the street, and, with scant apology for the seeming intrusion, told the good doctor what had just come under my observation.
He seemed surprised, if not affected, by what I had to say. He had seen no letter and no evidences of disorder on the part of Leighton. To be sure, he had left before any letter had been received.
"Indeed, you astonish me," he declared. "Seldom have I seen my young friend in a more equable frame of mind. He talked evenly and with discretion about the most exciting subjects; and, though I could wish him to have been more open, he showed a self-control hardly to be expected from a man placed in such a disturbing situation. The detective, who appeared to have full range of the house, hardly looked our way once. The letter which you say he received just as I left him must have contained very agitating news. I wonder if we will ever know what."