"And you really refuse to tell me who sent this message?" he asked in a tone of disappointment. "It was sent in secret," I answered. "Indeed, it was that fact which caused me to suspect. You can, of course, obtain the original of the telegram by applying for it from the authorities. But it is only signed by an initial." "How did you obtain knowledge of it?" "Again I have no intention of disclosing the source of my information, Señor Andrade," I replied as politely as I could, "I am, as a matter of fact, here in Madrid attempting to solve a very remarkable mystery which occurred in London a few months ago." "This is most interesting! You never told me that before!" he exclaimed. "I confess I wondered with what motive you and your friend Señor Hambledon, living at separate hotels, had in remaining here. It was regarded as suspicious by the detective force that being such intimate friends you lived at separate hotels, and met only in secret. Reports have reached me of your movements, and of your meetings," he laughed. "More than once you have been regarded as suspected persons," he added. "Well, I hope you do not regard me as a suspected person any longer, Señor Andrade!" I exclaimed with a smile. "No, no," he laughed. "But I confess you are something of a mystery. Why should the notorious Despujol dare to put his foot into Madrid and lay that deadly plot to kill you? You know the motive, and yet you will not disclose it to me." "Not at present," I said. "If it is found that Charles Rabel is really Despujol, then I will come forward and state all that I know." "You promise that?" "I do." "Very well--then I will give orders to have your suspicions investigated," replied the patient, urbane official. "A detective shall leave by the next train for Montauban with a request to the Prefect of Police of the Department of Tarn-et-Garonne for the arrest of the individual in question, if he should be identified." "Then I will accompany him," I said. "Excellent," he exclaimed. "It would be well if Señor Rivero, the head of the Detective Department, whom you have met, went in person to France. I will ring him up at his house." He took up the telephone and a few minutes later spoke rapidly in Spanish to the chief detective of Spain. Presently after a rapid conversation he put down the receiver, and said: "Señor Rivero will meet you at the Delicias Station at two o'clock to-morrow morning. The express for Barcelona leaves at two-fifteen. From Barcelona you can get direct to Nîmes, and on to Montauban. And," he added, "I only hope you will be successful in arresting the notorious Despujol." I thanked him, and suggested that if we should be fortunate enough to identify him, we should watch for the keeping of the appointment at the Hôtel Luxembourg at Nîmes on the following Monday. "With whom is he keeping the appointment?" asked Señor Andrade.