"It is so," went on Brett; "and in this matter you are even more hopelessly idiotic than I took you to be. I have told you my name and profession. I am a friend of Mr. Talbot, the English gentleman who has been spirited away in connection with this crime, and I have in my pocket at this moment a letter from the British Under-Secretary of State for Foreign Affairs, authorising me to use my best efforts towards elucidating the mystery and tracking the real criminals. Here is the letter," he continued, producing a document and laying it before the amazed official. "I was on the point of making an important discovery with reference to this case when these too zealous agents of yours seized me and absolutely refused, even whilst I was a prisoner in their hands, to follow up the definite clue I had obtained. It is an easy matter to verify my statements. The authenticity of this letter will be proved at the British Embassy, whilst a telegram to Scotland Yard will place beyond doubt not only my identity, but my bona fides in acting for Mr. Talbot's relatives and the Foreign Office. Further, an inquiry made at the Grand Hotel will produce unquestionable testimony from the manager, who knows me, and from my friend, Lord Fairholme, who occupies rooms there at this moment." "Lord Fairholme!" stuttered the official. "Why, that is the name given by the other prisoner." "Do you mean to say you have arrested the Earl of Fairholme?" gasped Brett, struggling with an irresistible desire to laugh. The Frenchman covered his confusion by growling an unintelligible order, and bent over the letter which Brett had given to him. In half a minute one of the detectives returned, and with him was Fairholme, on whose honest face indignation and astonishment struggled for mastery. "Oh, surely that cannot be you, Brett!" cried his lordship, the moment he entered the room. "Well, of all the ---- fools that ever lived, these French Johnnies take the cake. I suppose that they have spoiled the whole business! If the brutes had not taken me by surprise I would have knocked over a dozen of them before they arrested me." "Silence!" shrieked the commissary, into whose mind was intruding the consciousness that he had committed an outrageous blunder. "What did you say your name was?" he demanded fiercely. "I told you my name an hour ago," said his lordship haughtily, "and if you had not been so beastly clever you would have believed me. I am the Earl of Fairholme, a fact that can be readily substantiated by dozens of people here in Paris, and this is Mr. Reginald Brett, a friend of mine, who would have probably discovered the mystery of my friend's disappearance and the whereabouts of those diamonds by this time if you had not interfered." His lordship was hardly coherent with annoyance, but the acute official had now convinced himself that a stupid mistake had been committed by his department.