"He's got no business out there." We saw Orme making some sort of gestures, pointing to his horse and the others.
"Wonder if he wants to trade horses!" mused Auberry, chuckling.

Then in the same breath he called, "Look out! By God! Look!" We all saw it.

Orme's arm shot out straight, tipped by a blue puff of smoke, and we heard the crack of the dragoon pistol.

One of the Sioux, the chief who by this time had mounted his horse, threw his hand against his chest and leaned slightly back, then straightened up slightly as he sat.

As he fell, or before he fell, Orme pushed his body clear from the saddle, and with a leap was in the dead man's place and riding swiftly toward us, leading his own horse by the rein! It seemed that it was the Sioux who had kept faith after all; for none of the remaining three could find a weapon.