She knew that none of her outfit was out there and that Washington Washington was sleeping in his little pup-tent a few yards from her, for she could hear him breathing.
The Overland girl used her eyes and ears, and a few moments later she made out a vague form at the edge of the camp.

Even then she would not have seen it, had it not moved to one side.

The dark background prevented her being able to make anything out of the form, except that it was a human being.
Having satisfied herself of this, Grace raised her rifle, aiming it above the head of the intruder, and waited.

Herself being in a deeper shadow, her movements were not observed by the prowler.
Grace put a gentle pressure on the trigger.

A flash of fire and a deafening report followed.
Hippy Wingate sprang to his feet.
"Wha--wha--wha ?" he gasped.
"Don't get excited," soothed the calm voice of Grace Harlowe.