For a few seconds the old man looked at me as if he doubted my sanity, then he gripped my hand.
"I trust you completely, Erskine, and I will do what you ask. But I must go now. Good-night, my boy. God bless you!"
Directly he had gone I went out to relieve Simpson, and on visiting my wireless apparatus, I found that no message had come through. For the next two hours I was on tenter-hooks. My mind was filled with a thousand doubts. Fears of all sorts haunted me. What if my little apparatus were not powerful enough? What if I had misunderstood the whole situation? Everything seemed shadowy and unreal. I doubted myself, I doubted everything. That little apparatus which I had prepared to receive messages seemed as valueless as the toy of a child. How could messages move across great spaces and affect the little instrument which I had manipulated with such care? How could I expect to frustrate the plans of people who were skilled in plotting, and who had been plotting for years? Were not all my hopes and beliefs as baseless as the stuff of which dreams are made? What could a man with the Angel of Death flying over him expect to do under such circumstances?
Still I held on to my faith. Foolish as it might seem, I believed that my reasoning was sound, that I had discovered the truth, and that by carrying out my plans I might save hundreds of lives.
It was now dark; the moon, which was on the wane, would not rise till far past midnight. Although the night was windless it was cloudy. This fact made everything so dark that I did not dread watchful eyes.
Nine o'clock, half-past nine, ten o'clock, yet my little instrument was silent. Had I misunderstood what John Liddicoat had said? Was I mistaken when I heard him tell the woman that he must expect another message the next night? I was in an agony of suspense. Then my heart gave a great leap—the little instrument began to move, while I, with fast beating heart, wrote quickly.
Ten minutes later I had locked myself in my little room and was eagerly studying the slip of paper before me. I knew that the message, whatever it might be, had emanated from a spot within a comparatively limited radius, for the simple reason that my apparatus was not of sufficient capacity to receive long-distance messages.
It is impossible for me to convey on paper the state of my mind as I read the words which had been transmitted. My excitement was tense beyond words. I felt my heart beating wildly; I scarce dared to breathe.
And yet the message looked innocent enough. It was simply this: "One hour after midnight to-night. Completeness essential."
That was all; there were no explanations by which any one who was not in the plot could gain any information. It might be received by a score of wireless stations, and any one ignorant of what I knew would be none the wiser. It gave no clue even to the most subtle mind whereby action could be taken. It might be read by any one with perfect safety. No Government official, whatever his position, could understand it. Neither would he see any importance in it. The words were innocence itself, and yet, as I believed, they meant the safety or the destruction of perhaps hundreds of lives. So innocent did they seem that it appeared like madness to take action, but remembering what I had seen and heard, connecting incident with incident, and placing link to link as I did, my chain of reasoning seemed flawless. If I were wrong in my conclusions, I should not only be an object of ridicule, I might indeed be placing myself under menace of the law.