I could detect no evidence of surveillance whatever and cranking the engine I mounted and drove off. More than once, as I passed along Commercial Road, I stopped and looked back. But so far as I could make out no one was following me. The greater part of my route lay along populous thoroughfares, and of this I was not sorry; but I did not relish the prospect of Thames Street, along which presently my course led me.
Leaving the city behind me, I turned into that thoroughfare, which at night is almost quite deserted, and there I pulled up. Pardieu! I was disappointed! It seemed as though my scheme had miscarried. It could not understand why I had been permitted to go unmolested, and I intended to walk back to the corner for a final survey before continuing my journey. This survey was never made.
As I stopped the cab and prepared to descend, a faint—a very faint— sound almost in my ear, set me keenly on the alert. Just in the nick of time I ducked … as the blade of a long knife flashed past my head, ripping its way through my cloth cap!
Yes! That movement had saved my life, for otherwise the knife must have entered my shoulder—and pierced to my heart!
Someone was hidden in the cab!
He had quietly opened one of the front windows and had awaited a suitable opportunity to stab me. Now, recognizing failure, he leapt out on the near side as I lurched and stumbled from my seat, and ran off like the wind. I never so much as glimpsed him.
"Mon Dieu!" I muttered, raising my hand to my head, from which blood was trickling down my face, "the plan succeeds!"
I bound a handkerchief as tightly as possible around the wound in my scalp and put my cap on to keep the bandage in place. The wound was only a superficial one, and except for the bleeding I suffered no inconvenience from it. But I had now a legitimate reason for visiting Dr. Stuart, and as I drove on towards Battersea I was modifying my original plan in accordance with the unforeseen conditions.
It was long past Dr. Stuart's hours of consultation when I arrived at his house, and the servant showed me into a waiting-room, informing me that the doctor would join me in a few minutes. Directly she had gone out I took from the pocket of my tunic the sealed envelope which I had intended to lodge with the doctor. Pah! it was stained with blood which had trickled down from the wound in my scalp!
Actually, you will say, there was no reason why I should place a letter in the hand of Dr. Stuart; my purpose would equally well be served by pretending that I had done so. Ah, but I knew that I had to deal with clever people—with artists in crime—and it behooved me to be an artist also. I had good reason to know that their system of espionage was efficient; and the slipshod way is ever the wrong way.