He speaks with double tongue.

Never have the Indians seen a Policeman's back turned in flight." His unexpected appearance, his voice ringing like the blare of a trumpet through the cavern, his tall figure with the outstretched accusing arm and finger, the sharp challenge of the Sioux's lie with what they all knew to be the truth, produced an effect utterly indescribable.

For some brief seconds they gazed upon him stricken into silence as with a physical blow, then with a fierce exclamation the Sioux snatched a rifle from the cave side and quicker than words can tell fired straight at the upright accusing figure.

But quicker yet was Jerry's panther-spring.
With a backhand he knocked Cameron flat, out of range.

Cameron dropped to the floor as if dead.
"What the deuce do you mean, Jerry ?" he cried.