Suddenly a hand was laid upon his shoulder. He was turned about. Then he was thrust forward.

"Walk," commanded the man who had first spoken. The next moment he found himself moving out on to the prairie.

In the meantime the chauffeur was hustled back to the automobile. His captor secured him in the front seat, while the third man dragged the barbed wire clear of the road. Then the other took his place at the wheel, and the car rolled away.

The third man looked after it. Then he finally turned off the trail and followed Leyburn and his captor. By the time he reached them, both men were in the saddle, waiting. Two other horses stood by. He sprang into the saddle of one and led the other, and the whole party set off across the prairie.

CHAPTER XVIII

HIS BACK TO THE WALL

"Phew!"

Hendrie threw off the long cloth mask he had been wearing. It dropped into the wastepaper basket beside the desk. Angus Moraine followed his example.

In the center of the room, sitting on a high-legged armchair, his arms still bound, Austin Leyburn silently watched his captors' movements.