The Master Mystery

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