When, on another occasion, Senor Almarez, the President of Cacura, had thrown a glass of wine in the face of his brother-in-law, Captain Vassalaro, Saul Arthur Mann had jumped into the market and beaten down all Cacura stocks, which were fairly high as a result of excellent crops and secure government. He "beared" them because he knew that Vassalaro was a dead shot, and that the inevitable duel would deprive Cacura of the best president it had had for twenty years, and that the way would be open for the election of Sebastian Romelez, who had behind him a certain group of German financiers who desired to exploit the country in their own peculiar fashion. He probably built up a very considerable fortune, and it is certain that he extended the range of his inquiries until the making of money by means of his curious information bureau became only a secondary consideration. He had a marvelous memory, which was supplemented by his system of filing. He would go to work patiently for months, and spend sums of money out of all proportion to the value of the information, to discover, for example, the reason why a district officer in some far-away spot in India had been obliged to return to England before his tour of duty had ended. His thirst for facts was insatiable; his grasp of the politics of every country in the world, and his extraordinarily accurate information concerning the personality of all those who directed those policies, was the basis upon which he was able to build up theories of amazing accuracy. A man of simple tastes, who lived in a rambling old house in Streatham, his work, his hobby, and his very life was his bureau. He had assisted the police times without number, and had been so fascinated by the success of this branch of his investigations that he had started a new criminal record, which had been of the greatest help to the police and had piqued Scotland Yard to emulation. John Minute, descending from his cab at the door, looked up at the imposing facia with a frown. Entering the broad vestibule, he handed his card to the waiting attendant and took a seat in a well-furnished waiting room. Five minutes later he was ushered into the presence of "The Man Who Knew." Mr. Mann, a comical little figure at a very large writing table, jumped up and went halfway across the big room to meet his visitor. He beamed through his big spectacles as he waved John Minute to a deep armchair. "The chief commissioner sent you, didn't he?" he said, pointing an accusing finger at the visitor. "I know he did, because he called me up this morning and asked me about three people who, I happen to know, have been bothering you. Now what can I do for you, Mr. Minute?" John Minute stretched his legs and thrust his hands defiantly into his trousers' pockets. "You can tell me all you know about me," he said. Saul Arthur Mann trotted back to his big table and seated himself.