The interruption was imperative; a fierce "Hist!" from the corner beside the safe, and at the same instant a blurring of the gray patch of the window, a sash rising almost noiselessly, and two men, following each other like substance and shadow, legging themselves into the office over the window-sill. At first I thought Dorgan had set a trap for me; but before that unworthy suspicion could draw its second breath, the track foreman had hurled himself upon the two intruders, calling to me to come on and help him.

The battle, such as it was, was short, sharp and decisive, as the darkness and the contracted fighting space constrained it to be. Though I dared not shoot, I contrived to use the rifle as a club on the man who was trying to choke Dorgan from behind, and after a hard-breathing minute or two we had them both down, one of them half stunned by the blow on his head from the gun-barrel, and the other with an arm twisted and temporarily useless. Under Dorgan's directions I cut a couple of lengths from a rope coil in the commissary with which we tied the pair hand and foot, dragging them afterward to the freer floor space beyond the pay-office partition.

"They'll be stayin' put till mornin', I'm thinkin'," was Dorgan's comment as we retreated to the scene of the battle. Then, as he edged toward the open window: "Ye won't be needin' me any more to-night … I'll duck whilst the duckin's good."

"Not just yet," I interposed, and pulled him to a seat on the cot beside me. "I want to know a few things first. You knew about the raid these fellows were planning?"

"Sure, I did."

"Tell me about it."

"I piped 'em off about a week ago—when Kenniston 'd gone. They talked too much, and too loud, d'ye see? The lay was f'r to chase in to the Creek wit' you—an' they did—an' get you on the road, if they could; if that didn't work, they was to crack the safe"—this with the contempt of the real craftsman for a pair of amateurs. "D'ye see, the boss 'd been dippy enough to write the combination on a piece o' paper when Kenniston ducked out—f'r fear he'd be forgettin' it, maybe, and these dubs o' the world nipped the paper."

"See here, Dorgan; was that why you followed me to town this afternoon?" I shot at him.

"Ye've guessed it."

"And it was for the same reason that you sneaked in here while I was asleep?"