I felt a rush of blood from the heart to the head when I read this order. Who had betrayed Alloway? Marcel's fate and mine were in a way bound up with his, and whoever had seen him entering the Desmond house might too have seen me advising him to hide there. I looked fixedly at Waters, but he was still gazing at the same spot on the wall and his face was without expression. I studied his profile, the heavy cheek-bones, the massive projecting jaw, and the steady black eyes, the whole forming a countenance of unusual strength and boldness, and I felt that he would dare anything. This was a man who could use his power over Marcel and me merely for his own sport, torturing us until he chose to crush us. And then another thought, even more unpleasant, came into my mind. Perhaps it was Mary Desmond herself who had betrayed Alloway! It was altogether likely that she would discover him in her father's house. But I rejected the thought the next instant, since, Tory though she was, she could not have stooped to such an act. "You can go," I said to Waters; and he left, first saluting both Marcel and me, his face remaining a complete mask. Then I showed the order to Marcel. "I trust that you will find nothing," he said significantly, "but you know, Lieutenant Arthur Melville of Newton-on-the-hill, Staffordshire, England, that there is naught for you to do but go and do it." "I know it," I replied, "and I shall not hesitate." "Take care that you search properly," said Marcel, looking me straight in the eye. I believed that he understood, but he said no more now, and I went forth to do my distasteful duty. I took ten men and proceeded towards the Desmond house. We attracted no attention in the street, as soldiers had long since grown to be a common sight in Philadelphia, but on the way we met Belfort and the Hessian Colonel Schwarzfelder, whom I had thrown out of General Howe's room. They seemed to be acquainted and on good terms, and I did not like this alliance of two men whom I knew to be my enemies. I liked still less the question that Belfort asked me. "On duty, eh, Melville?" he said jauntily, as if he knew what I was about, but preferred that I should tell it. I glanced at Schwarzfelder too, and noticed a sneering look on his face as if he were prepared to enjoy a triumph over me. Perhaps it was Belfort, after all, who was the cause of the proposed search. But I did not hesitate to tell them the truth. "I am going to search John Desmond's house for the man who escaped from the prison last night," I replied calmly. "It is the order of General Howe." "And the beautiful Miss Desmond such a good Royalist!" said Belfort. "I do not envy you."