Amazon.com description: Product Description: Peter Brent sat nervously smoking in the library of his great house, Brent Rock. He was a man of about forty-five or -six—a typical, shrewd business man. Something, however, was evidently on his mind, for, though he tried to conceal it, he lacked the self-assurance that was habitually his before the world. A scowl clouded his face as the door of the library was flung open and he heard voices in the hall. A tall, spare, long-haired man forced his way in, crushing his soft black hat in his hands. "I will see Mr. Brent," insisted the new-comer, as he pushed past the butler. "Mr. Brent!" he cried, advancing with a wild light in his eyes. "I'm tired of excuses. I want justice regarding that water-motor of mine." He paused, then added, shaking his finger threateningly, "Put it on the market—or I will call in the Department of Justice!" Brent scowled again. For years he had been amassing a fortune by a process that was scarcely within the law. For, when inventions threaten to render useless already existing patents, necessitating the scrapping of millions of dollars' worth of machinery, vested interests must be protected.