She had grown accustomed to the silences and now and then paused in her pacing to stop and listen. She thought she heard a sound different from the others--behind her it seemed, a subdued murmur, which, as she listened, grew in intensity until she clearly made it out to be the quick reverberations of a motor, running with its cut-out open. It was coming fast, and in a moment a long fan of light shot across the sky from below the brow of a distant hill and then fell suddenly to earth, where it picked out the shapes of trees and bushes along what appeared to be its road. The motor was not traveling toward her, but at an angle which would make it pass near her, but quickly as she mounted and rode toward it she was unable even to come within earshot before the machine had passed and was lost to sight in the distance. It had not gone by so rapidly that Doris had not been able to make out on a rise of ground against the sky the profile of a roadster and the shapes of two men. Cyril and Stryker! There could be no doubt of it, for the body of Cyril’s car was familiar to her and the chances of any other machine being abroad in this locality at this hour were remote indeed. Where were they going? In which direction? Toward Saltham Rocks or northward? She did not know, but decided to take the chance and follow. She reached the road without difficulty--a trail it appeared to be with well-defined wheel tracks and the marks of hoofs. She pressed her horse onward in the wake of the speeding machine, not to overtake it, but to reach a destination of some sort which would be better than the utter loneliness of the desolate moor, the silence and inaction of which made her a prey to unhappy thoughts. Her horse was willing, and as the going was good broke into a brisk trot which for a while kept the glow of the swinging searchlight of the machine in sight. But presently that, too, disappeared and all was as before. And glancing above she understood. To her right a pale streak of light was showing along the horizon, and above her between patches of dark clouds she caught a faint reflection of violet light. It was the beginning of the dawn.