"No."

The reply was prompt and uncompromising. Torrance, flaming as usual before unexpected opposition, was about to fire him on the spot, when the noise of metal against metal drew Tressa to the door.

"It's Constable Williams and a new Policeman—a Sergeant. Father's here, Mr. Williams. He was sending for you. There's been a dreadful accident. A piece of the trestle fell and killed two of the men."

As Tressa stepped back to let the Policeman enter, the halfbreed slid unobtrusively to the other side of the room and stood in the semi-obscurity facing the doorway, his back tight against the wall.

"Yes," stormed Torrance, "and if it had killed a dozen of them it would have served them right. They'd taken out the bolts and cut a rope."

Constable Williams, blinking at the sudden darkness of the sitting room, stepped aside and made way for a straight, bronzed figure wearing the stripes of a Sergeant, who was already acknowledging with a winning smile Tressa's unspoken welcome.

"Torrance, shake hands with Sergeant Mahon. He's been sent up to clear—"

The halfbreed, his squinting eyes staring as at a ghost, seemed to make only a single movement. Then the entire window crashed out, and a pair of heavy boots disappeared over the sill.

For one brief moment the contractor and his daughter were stupefied. Not so Sergeant Mahon. With the crash he was at the door, tugging at his belt. But Tressa was in the way, and by the time he reached the open only a tiny cloud of dust rising above the edge of the steep drop to the river bottom told the way the halfbreed had gone.

The Sergeant rushed to the bank and looked down the hundred-and-fifty foot wall with a gasp. No need for a revolver there. With a shudder he drew back.