"The unfortunate young man was attracted towards you; he accompanied you to Monte Carlo on the day of his death, and he was found dead in your sitting-room."
"I know," I said. "But why did he go there?"
"Because he, no doubt, wished to speak with you."
"At that late hour? I cannot conceive why he should want to speak with me. He might have come to me in the morning."
"No. The matter was pressing—very pressing."
"Then if you know its nature, as you apparently do, perhaps you will tell me."
"I can do nothing," the deep voice responded. "I only desire to warn you."
"To warn me!" I cried, surprised. "Of what?"
"Of a danger which threatens you."
"A danger? Explain it."