We must explain to our readers that the arrival of expected vessels is an uncertain event, and the shore watchers were sometimes compelled to go off night after night, even for weeks, before the vessel, sending out the long-looked-for signals, hove in sight off the horizon; and it was on these vigil nights the detective had sailed out with the men. He had thought his game well played, his disguise perfect, his victory sure, when, as stated, at the last moment, a strange, beautiful girl came along and whispered in his ear the terrible warning that danger awaited him if he went off in the boat that night. Spencer Vance, however, was undaunted; the warning was not sufficient to deter him going off and braving death in the way of duty, and he would have gone had not an incident occurred that caused him to await another opportunity. As recorded, after his encounter with Sol Burton, he returned to where his boat lay, determined to go off to the yacht, when a second time an apparition glided to his side and whispered a few startling words in his ear. CHAPTER IV. The detective stood by his boat thinking over the thrilling position of affairs, when Renie Pearce once more appeared before him. "Hello! you've come back, eh?" called the detective. "Yes." "Well, what now?" "You are determined to go off to-night." "Well?" "You must not go, there's better game for you ashore!" The detective was thrown off; he could not understand the girl. Renie had confessed that she had originally betrayed him to the smugglers, and then, when danger threatened, she came and warned him, and her warning failing, she came tripping to him once more, barefooted, ragged, and beautiful, and held out to him an alluring bait. There was no misunderstanding the purport of her words. She betrayed the fact that she knew his full purpose, and her words implied that she was ready to throw him a larger and more certain game. Her words were, "There's better game for you ashore!" "Are you, my friend, Renie?" "Yes; I am your friend." "If you are my friend, why did you betray me to the smugglers?" "I was not your friend then, I am your friend now. I can serve you and you can serve me! Your life is in danger. You will never return if you go out in the yacht to-night. I had prepared you for your doom, but now I will save you, and again I tell you that there's better game ashore." "Why should I trust you! do you not confess to having betrayed me?" "I only knew you then as a government detective; now I know you are a man." "You must have made the latter discovery very suddenly." "I did." "When?" "When you knocked Sol Burton down; that man meant me harm. I could have defended myself against him, but a greater peril menaces me to-night." "What peril menaces you?" "I have no confidant in the world; shall I make one of you?" "Yes." "My confidence may get you into trouble." "How sad." "You are a brave, noble man; you will desire to act as my champion."