On the day after receiving this communication, Lyon, while walking the floor in one of the parlours, saw a man pass in from the street, and go hurriedly along the hall. The form struck him as strangely like that of his friend from whom he was hourly in expectation of another letter. Stepping quickly to the door of the room, he caught a glimpse of the man ascending the staircase. To follow was a natural impulse. Doubt was only of brief continuance. "David!" he exclaimed, on reaching his own apartment. "In the name of heaven! what does this mean?" "That you are in danger," was replied, in a tone that made the villain's heart leap. "What?" The two men retired within the apartment. "I fear they are on our track," said Leach. "Who?" "The law's fierce bloodhounds!" "No! impossible!" The face of Lyon grew white as ashes, and his limbs shook with a sudden, irrepressible tremor. "Speak out plainly," he added. "What evidence is there of danger?" "In my last letter, you will remember, I expressed some fear on this head, and mentioned my purpose to go to Washington and assume a disguise." "I do, and have felt troubled about it." "Well, I was off by the early train on the next morning. As good or bad luck would have it, the very man who sat next me in the cars was an individual I had met in the family of Mr. Ellis. He knew me, but played shy for some time. I pretended not to recognise him at first, but turning to him suddenly, after we had been under way for ten minutes or so, I said, as if I had but just become aware of his identity, 'Why, how are you? I did not know that I had an acquaintance by my side.' He returned my warm greeting rather distantly; but there was too much at stake to mind this, and I determined to thaw him out, which I accomplished in due time. I found him a free sort of a man to talk, after he got going, and so I made myself quite familiar, and encouraged him to be outspoken. I knew he had heard something about my adventure at Mr. Willet's, and determined to get from him the stories that were afloat on that subject. All came in good time. But the exaggeration was tremendous. Fanny had concealed nothing from her father, and he nothing from Mr. Willet. I was known as your agent and accomplice, and there was a plan concocting to get possession of my person, and, through me, of yours. 'Take a friend's advice,' said the man to me, as we stepped from the cars at Washington, 'and give--a wide berth in future.' I did take his advice, kept straight on, and am here." "Confusion!" The pallid face of Lyon had flushed again, and was now dark with congestion. "When will the next boat leave for Vera Cruz?" inquired Leach. "Day after to-morrow," was answered. "We are in peril here every hour." "But cannot leave earlier. I hope your fears have magnified the danger." "If there be danger at all, it cannot be magnified. Let them once get you in their hands, and they will demand a fearful retribution."