Hippy had heard the shots too, but his orders were to keep his position and continue on until directed to stop. As Hi got within speaking distance of him, Hippy challenged.

"Move forward and keep going until I fire three signal shots to call you in," directed the guide. "The man may run along the ridge. Wing him if you see him. He may have shot Mrs. Gray. Both of them fired. There they go again!" Hi Lang was off at top speed.

Grace, in the meantime, thinking that she had heard a twig snap, halted sharply. Then, to her amazement, a man stepped out into the light a few yards to the rear of her. She saw him the instant he emerged from the shadows, and he was looking in the direction of the Overland camp.

"Now I have you!" muttered Grace Harlowe, taking a cautious step toward the man who was standing with his back toward her.

"Put up your hands! I have you covered!" she commanded sharply.

The man whirled like a flash and fired point blank at the Overland girl. Grace fired almost in the same instant. So close was he to her when he fired that she imagined she could feel the hot powder strike her face.

Each fired again. It was close quarters for Grace. She sprang to the right hoping to disconcert her adversary and make a more difficult mark for him to hit. He pulled the trigger of his revolver, and, at that second, Grace, uttering a little gasp, toppled over, half turning as she plunged forward with arms outstretched.

Black night instantly enveloped the Overland Rider, nor did she hear a rattling exchange of shots that followed almost instantly after her fall, for consciousness had left her.

CHAPTER VI

INTO THE GREAT SILENCE