As the distance between me and the on-coming train lessened, the tension increased and my sense of baffled impotence, when I detected no sign anywhere on the rails, was staggering. By a great effort only could I prevent myself from doing something to stop the approach of the train and my eagerness was multiplied infinitely when, in a glance which I could not keep from straying to the murderous gang on my right, I saw them one and all making ready stealthily for their deadly work.

But no sign on the track gave me my cue for action, and I could only wait, full of my resolve to do all that had to be done should this be the train to be thrown off the line.

It came thundering up and passed me without my being able to take a step of any sort. Like the other it passed along the whole section of the line in safety, though I saw, with an astonishment that for the moment bewildered me, that the Imperial saloon was the central carriage.

Obviously the Czar had passed in safety. And I jumped instantly to the conclusion that for some reason the mechanism, which was to have derailed the train, had failed to act.

But an incident which occurred almost as soon as the train had passed, shewed me the falseness of this conclusion.

I was still staring fixedly at the track, when at a point that was exactly opposite me, and thus in a direct line with the three alder trees, I saw the two rails swing aside from the track, just enough to turn a train off the rails that was travelling over the place. There was scarcely a click of sound: and, after a moment they swung back as silently into position.

I read the whole thing in a moment.

The operator knew that the moment had come for action and wished to make quite sure that the mechanism was in due order. The sight increased infinitely the oppressive weight and strain of the suspense. I knew now that the Czar was in the third train, and that the Imperial carriage had been sent on with the second as a ruse.

I knew too, that the supreme hour of my struggle was at hand, in all grim reality.

I could now relieve my eyes from the straining task of watching the track, and I looked about me. The five men to my right were also on the alert. They had not been misled by the ruse of the empty court carriage, and were waiting in deadly readiness to strike the blow which they had come out to deal.