Now go back--and for God's sake he careful!" He pressed money into her two hands, held them tightly together, kissed them both hurriedly and plunged down the hill with Sunfish slipping and sliding after him.

For her safety, if not for his own, he meant to get away from there as quickly as possible.
In the creek bed he mounted and rode away at a sharp gallop, glad that Sunfish, thoroughbred though he was, had not been raised tenderly in stall and corral, but had run free with the range horses and had learned to keep his feet under him in rough country or smooth.

When he reached the crossing of the stage road he turned to the left as Marian had commanded and put Sunfish to a pace that slid the miles behind him.
With his thoughts clinging to Marian, to the harshness which life had shown her who was all goodness and sweetness and courage, Bud forgot to keep careful watch behind him, or to look for the place where the hill trail joined the road, as it probably did some distance from Crater.
It would be a blind trail, of course--since only the Catrock gang and Marian knew of it.
They came into the road not far behind him, out of rock-strewn, brushy wilderness that sloped up steeply to the rugged sides of Gold Gap mountains.

Sunfish discovered them first, and gave Bud warning just before they identified him and began to shoot.
Bud laid himself along the shoulder of his horse with a handful of mane to steady him while he watched his chance and fired back at them.

There were four, just the number he had guessed from the sounds as they came out of the tunnel.