Would Harold see the necessity for acting on my advice?— I wondered. I gazed out along the train as soon as we had got well clear of Berwick. A minute—two minutes—three minutes passed; and still no handkerchief. I began to despair. He was debating, no doubt. If he refused, all was lost, and we were disgraced for ever.
At last, after long waiting, as I stared still along the whizzing line, with the smoke in my eyes, and the dust half blinding me, I saw, to my intense relief, a handkerchief flutter. It fluttered once, not markedly, then a black hand withdrew it. Only just in time, for even as it disappeared, the detective's head thrust itself out of a farther window. He was not looking for anything in particular, as far as I could tell—just observing the signals. But it gave me a strange thrill to think even now we were so nearly defeated.
My next trouble was—would the train draw up at Dunbar? The 10 A.M. from King's Cross is not set down to stop there in Bradshaw, for no passengers are booked to or from the station by the day express; but I remembered from of old when I lived at Edinburgh, that it used always to wait about a minute for some engine-driver's purpose. This doubt filled me with fresh fear; did it draw up there still?—they have accelerated the service so much of late years, and abolished so many old accustomed stoppages. I counted the familiar stations with my breath held back. They seemed so much farther apart than usual. Reston—Grant's House—Cockburnspath—Innerwick.
The next was Dunbar. If we rolled past that, then all was lost. We could never get married. I trembled and hugged myself.
The engine screamed. Did that mean she was running through? Oh, how I wished I had learned the interpretation of the signals!
Then gradually, gently, we began to slow. Were we slowing to pass the station only? No; with a jolt she drew up. My heart gave a bound as I read the word 'Dunbar' on the station notice-board.
I rose and waited, with my fingers on the door. Happily it had one of those new-fashioned slip-latches which open from inside. No need to betray myself prematurely to the detective by a hand displayed on the outer handle. I glanced out at him cautiously. His head was thrust through his window, and his sloping shoulders revealed the spy, but he was looking the other way—observing the signals, doubtless, to discover why we stopped at a place not mentioned in Bradshaw.
Harold's face just showed from another window close by. Too soon or too late might either of them be fatal. He glanced inquiry at me. I nodded back, 'Now!' The train gave its first jerk, a faint backward jerk, indicative of the nascent intention of starting. As it braced itself to go on, I jumped out; so did Harold. We faced one another on the platform without a word. 'Stand away there:' the station-master cried, in an angry voice. The guard waved his green flag. The detective, still absorbed on the signals, never once looked back. One second later, we were safe at Dunbar, and he was speeding away by the express for Edinburgh.
It gave us a breathing space of about an hour.