"You have the note?" he asked. "Recollect what I told you concerning the man Hartmann."

"Yes," she replied. Then, addressing me, she said, "Take care of these people Mr. Jacox. They are utterly unscrupulous"; and she again disappeared into the darkness.

Ray and I turned and again walked back in the direction of Rosyth. But when we had gone a little distance he told me to approach the naval offices carefully, conceal myself in the bushes, and watch until he joined me. On no account was I to make any sign, whatever I might witness.

Though intensely cold the night was not very dark, therefore I was not long in establishing my position at a spot where I had a good view of the offices. Then I leaned upon a tree-trunk and waited in breathless expectation. I touched my father's old repeater which I carried and found it to be a quarter past midnight.

For over an hour I remained there, scarce daring to move a muscle.

Suddenly, however, upon the mud at the side of the road I heard soft footsteps, and a few moments later two figures loomed up from the shadow. But when about forty yards from the offices they halted, one of the men alone proceeding.

With great caution he climbed the spiked railing, and crossing rapidly to the main door of the offices he unlocked it with a key and entered, closing the door after him. As far as I could distinguish, the man wore a short beard, and was dressed in tweeds and a golf cap. Holding my breath, I saw the flashing of an electric torch within the building.

Fully twenty minutes elapsed before he reappeared, relocked the outside door, and clambering back over the railings, rejoined his waiting companion, both being lost next second in the darkness.

I longed to follow them, but Ray's instructions had been explicit—I was to wait until he arrived.

Half an hour later, hearing his low whistle, I emerged from my hiding-place to meet him and tell him what I had seen.