His words rang frank and bold, but something in his look, as he blinked at his partner, might have given Flint cause for uneasiness, had the Billionaire noticed that oblique and dangerous glance. One might have read therein some shifty and devious plan of Waldron's to dominate even Flint himself, to rule the master or to wreck him, and to seize in his own hands the reins of universal power. But Flint, bending over his note-book and making careful memoranda, saw nothing of all this.

Waldron, an inveterate smoker, lighted a fresh cigar, leaned back, surveyed his partner and indulged in a short inner laugh, which hardly curved his cruel lips, but which hardened still more those pale-blue, steely eyes of his.

"All right," said he, at last. "Enough of this, Flint. Let's get back to town, now, and have a conference with Henderson. That's the first step. By tonight, the whole campaign of publicity must be mapped out. Come, come; you can finish your memoranda later. I'm impatient to be back in Wall Street. Come along!"

Five minutes later, having left orders that Herzog was to attend upon them in their private offices, next morning, they had ordered the limousine and were making way along the hard road toward the gate of the enclosure.

The gate opened to let them pass, then swung and locked again, behind them. At a good clip, the powerful car picked up speed on the homeward way. The two magnates, exultant and flushed with the consciousness of coming victory, lolled in the deeply-cushioned seat and spoke of power.

As they swung past the aviation field and neared the Oakwood Heights station, a train pulled out. Down the road came tramping a workingman in overalls and jumper, with a canvas bag of tools swinging from his brawny right hand. As he walked, striding along with splendid energy, he whistled to himself—no cheap ragtime air, but Handel's Largo, with an appreciation which bespoke musical feeling of no common sort.

The Billionaire caught sight of him, just as the car slowed to take the sharp turn by the station. Instant recognition followed. Flint's eyes narrowed sharply.

"Hm! The same fellow," he grunted to himself. "The same rascal who stood beside us on the ferry boat, as we were talking over our plans. Now, what the devil?"

Shadowed by a kind of instinctive uneasiness, not yet definite or clear but more in the nature of a premonition of trouble, Flint gazed fixedly at the mechanic as the car swung round the bend in the road. The glance was returned.

Yielding to some kind of imperative curiosity, the Billionaire leaned over the side of the car—leaned out, with his coat flapping in the stiff wind—and for a moment peered back at the disquieting workman.