“But if he has this terrible drug in his possession he is more than ever a danger to society,” the Spanish official went on, speaking in French. “I thank you, m’sieur, for all the information you have given me, and you may rely upon me to take every possible step towards securing his arrest. I was in telegraphic communication with the Paris Sûreté only this morning concerning him. I will wire them again. They have been stirred into activity by the message I sent them after your call to see me.”

I longed again to be frank with the affable Señor Andrade, yet I saw that if I were I might negative all chance of solving the problem which concerned the health and life of the girl whom I had grown to love so fervently.

Upon a sudden impulse I remarked with affected carelessness:

“I hear that our English financier, Mr. De Gex, is at the Ritz.”

“Yes,” he replied. “He is here under an assumed name in connexion with some big railway scheme in Estremadura—a line between Toledo and Merida. It is badly wanted, and has been talked of for years. There is a huge stretch of country south of the Tagus as far as Villa Nueva without any railway communication. The King himself has been agitating for the development of that rich agricultural region for the last ten years. And now it seems as though your great financier, Monsieur De Gex, is here to consult with the Ministry of Communications.”

“Yes,” I said, realizing in what high esteem that mystery-man of millions was held.

“I do not think I would care to have such colossal wealth as his,” remarked the Chief of Police. “As soon as he arrived from Paris I had orders from the Ministry to place him under surveillance, because, it seems, he goes in fear of some personal attack upon him.”

“By whom?” I asked, instantly interested.

“The information is vague,” was his reply. Then, taking up a large yellow paper from his desk, he said: “It seems that he has applied to the Ministry for personal protection, and for a daily report of anyone who may be keeping observation upon him. There is a young Englishman living at the Palace Hotel who seems unduly interested in the gentleman’s movements. We are watching him.”