"Those who speak of risk are invariably in fear," I said. "Your words betray that you have some connection with the crime."

I watched him narrowly, and saw him start perceptibly. Then I congratulated myself upon my shrewdness, and was determined to fence with him further and endeavour to make him commit himself. I rather prided myself upon smart repartee, and many had told me that at times I shone as a brilliant conversationalist.

"Ah!" he said hastily, "I think you mistake me, Miss Rosselli. I am acting in your interests entirely."

"If so, then surely you may give me your name or tell me who you are."

"I prefer to remain unknown," he replied.

"Because you fear exposure."

"I fear no exposure," he protested. "I came here to speak with you secretly to-night, because had I called openly at your hotel my visit would have aroused suspicion, and most probably have had the effect of thwarting the plans of those who are endeavouring to solve the enigma."

"But you give me no proof whatever of your bona fides!" I declared.

"Simply because I am unable. I merely come to give you warning."

"Of what?"