"Mac, what're we goin' to do ?" The other had not time to answer, for the shadow at the door of the barn now leaped towards them, silently, without growl or yelp or snarl.
As if to guide the battle, the kindling wood behind them now ignited and sent up a yellow burst of light.

By it Haw-Haw Langley saw the great beast clearly, and he leaped back behind the sheltering form of Mac Strann.

As for Mac, he did not move or flinch from the attack.

His revolver was in his hand, levelled, and following the swift course of Black Bart..